Top Internet of Things Companies in Sofia

Ratings Updated: July 29, 2026

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18 Companies

Country: Bulgaria

City: Sofia

List of the Top Sofia IoT Developers

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Yalantis

4.8 79 reviews

Premier Verified

$50,000+

$50 - $99 / hr

250 - 999

Serves Sofia, Bulgaria

Services provided

60% IoT Development

10% AI Development

10% BI & Big Data Consulting & SI +2 services

10% Custom Software Development

10% Product Design

Yalantis is a prominent IoT App Development company recognized for its expertise in custom healthcare software solutions with IoT integration. They are praised for their seamless team integration, consistent delivery of reliable outcomes, and ability to adapt to changing requirements, with 100% positive feedback emphasizing their dedication, team continuity, and strategic partnership capabilities.

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1 of 1 IoT Development reviews are 5 stars

$1,000,000 – $9,999,999 avg. project cost

IoT Development PROJECT HIGHLIGHT

IoT & Mobile App Development for IoT Hardware & Software Co
5.0 — Yalantis provided development services for an IoT hardware and software company. The team extended the client's network and app version 2.0 and offered iOS and Android development, QA, and project Read more
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Average Project Cost Breakdown

$50,000 to $199,999 (27) $200,000 to $999,999 (15) $10,000 to $49,000 (13) $1,000,000 to $9,999,999 (2)

What Clients Have Said
Yalantis is frequently recognized for providing high-quality services at competitive prices, with clients noting excellent value for money. Feedback highlights their ability to deliver projects on time and maintain clear communication, which fosters a strong partnership. One client emphasized that Yalantis offers a 'great quality-to-price ratio,' while another mentioned their pricing fit their budget perfectly. Overall, the sentiment regarding cost-effectiveness is overwhelmingly positive, although some clients expressed a desire for more precise initial estimates.
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More responsive than most other service providers

Yalantis is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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United States (45) Israel (3) England (3) China (3) Spain (2) Australia (2) Estonia (2) Canada (2) Sweden (2) Qatar (1) Poland (1) India (1) Norway (1) Nigeria (1) Switzerland (1) United Arab Emirates (1) Denmark (1) Kuwait (1)

This provider is fluent in 2 languages:

English

Ukrainian

This provider is available in 32 time zones:

Near East Time (NET)

Middle East Time (MET)

China Taiwan Time (CTT)

Brazil Eastern Time (BET)

Greenwich Mean Time (GMT)

India Standard Time (IST)

Japan Standard Time (JST)

Midway Islands Time (MIT)

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Cogniteq

4.9 45 reviews

Premier Verified

$10,000+

$50 - $99 / hr

50 - 249

Serves Sofia, Bulgaria

Services provided

10% IoT Development

75% Mobile App Development

10% Web Development +1 service

5% Custom Software Development

Cogniteq is a distinguished Internet of Things Development company, specializing in IoT App Development and IoT Solutions. Across various projects, 100% of reviews highlight their effective communication and project management, with clients appreciating their technical expertise, timely deliverables, and adaptability to project needs. Their consistent delivery of high-quality IoT features underscores their reputation for excellence in IoT App Development and consulting services.

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Reviews mention High-quality work
Cogniteq consistently receives positive feedback for delivering high-quality work across various projects. Clients highlight their ability to meet project milestones, maintain clear communication, and provide effective solutions. For instance, one client praised the 'high-quality work' and seamless integration with their team, while another noted the 'excellent quality of the mobile app' developed within a tight timeline. Overall, the sentiment reflects strong satisfaction with Cogniteq's deliverables and their commitment to quality.

Custom Software & IoT Development for SaaS Company

5.0 Oct 7, 2024

The high quality coding and development process was noteworthy. Worked very well with our internal team as a virtual extension. They did a great job, highly recommended.
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Staff Aug & Software Dev for Ad Insertion Platform Provider

5.0 Mar 15, 2024

Their work is done on time and of a very high quality. Negotiations were friendly, efficient and unbureaucratic.
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Web App React Development for IT Company

5.0 Dec 22, 2023

The project outcomes included high code quality and happy clients. Both, their developers and key account managers were collaborative, pragmatic, and reliable.
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Software Dev & Staff Aug for Enterprise Software Dev Co

5.0 Dec 19, 2023

Most of their developers have a high-level of skill with a good command of English. They have been delivering at a high standard, so very happy with them as is.
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Platform Dev Services for Pharmaceutical Company

4.5 Aug 5, 2022

The project is delivered fully to satisfaction. The code they wrote is 'clean' / not messy. Very happy with the results!
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3 of 3 reviews are 5 stars

$50,000 – $199,999 avg. project cost

Reviewed 3 times in the past 6 months
Recent client feedback for Cogniteq reflects strong satisfaction with their project management and communication. Clients praised the team for delivering high-quality, budget-friendly solutions while maintaining flexibility. Specific highlights include an exceptionally engaged project manager who was proactive in communication and responsiveness, as noted by Lindcom. Zipp Labs emphasized Cogniteq's expertise and solution-oriented approach, resulting in successful project outcomes without critical issues. Overall, the sentiment is overwhelmingly positive, with no significant areas for improvement mentioned.
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Industry Experience

Cogniteq has garnered positive feedback across various industries, notably in Information Technology, Consumer Products, and Medical sectors. Clients commend their expertise in software development, UX/UI design, and project management. In IT, they excel in delivering timely and high-quality solutions, particularly in mobile and web applications. The Consumer Products sector values their innovative approaches in developing IoT platforms. Overall, Cogniteq is regarded as a reliable partner with strong communication skills, making them a suitable choice for clients across multiple industries seeking technical expertise and responsive collaboration.
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Advertising & marketing Business services Healthcare Software Consulting IT Services Medical Engineering Automotive Design Telecommunications Pharmaceuticals Media Consumer products & services Information technology

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More responsive than most other service providers

Cogniteq is very responsive
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Sigma Software Group

4.8 37 reviews

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Premier Verified

$50,000+

$50 - $99 / hr

1,000 - 9,999

Sofia, Bulgaria

Services provided

11% IoT Development

17% Mobile App Development

15% Custom Software Development +5 services

15% Web Development

11% BI & Big Data Consulting & SI

11% Cloud Consulting & SI

10% AI Consulting

10% Cybersecurity

Sigma Software Group is a versatile IT services company offering comprehensive software development, website creation, and application development solutions. The company is praised for its efficiency, creativity, and collaborative spirit, with 100% of reviewers highlighting timely delivery and satisfaction with product outcomes. While some suggest a need for more proactive guidance, 90% of feedback notes their adaptability and strong alignment with client needs and values.

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Reviews mention Well-organized projects
Clients have consistently praised Sigma Software Group for their well-organized project management. One client noted their flexibility and ability to meet deadlines, stating, 'Sigma Software Group was good at planning and meeting deadlines.' Another highlighted their structured approach, saying, 'They're very structured, follow plans, and are very well organized.' Overall, the sentiment reflects a strong confidence in Sigma's organizational capabilities, contributing positively to project outcomes and client satisfaction.

Custom Software Dev for Motor Vehicles Manufacturing Company

5.0 Nov 20, 2022

We have monthly meetings where we decide things based on resource allocation, budget issues, or questions. On the project management side, we have a weekly follow-up through Microsoft Teams. We use our DevOps for project management so we have full visibility on a daily basis of all ongoing activities.
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Logo Marketplace for Design Platform

4.5 Jun 7, 2021

Sigma works very structured and organised with Jira and general reporting on time spent, estimates and costs. We are very happy and satisfied with the transparency and communication.
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Web & Software Development for Property Tech Firm

5.0 Apr 9, 2021

We communicate over Discord. It has a very organized layout, with the ability to create different channels that apply to specific tasks, like pages on our website or our software platform. This way, we don’t have just one email thread or chat for our massive project.
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Staff Augmentation & Development for Telecom Media Company

5.0 Mar 4, 2021

One of the things we really loved was the ability to create off-site in Ukraine at a low price. Once a year, we’d gather in one location in Ukraine and brought people from the US, London, Israel, and created large offsites. Sigma Software was very facilitative to accommodate this including setting up hotels, transportation, dinners, etc. All of it was well organized.
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Custom Software Development for Airlines Association

4.5 Apr 13, 2023

We planned deadlines together and adapted our schedule as needed since the COVID-19 pandemic started when we worked together. Sigma Software Group was flexible and organized. Sigma Software Group was good at planning and meeting deadlines. Before the COVID-19 pandemic, we had in-person meetings, and then we changed to Zoom.
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Industry Experience

Sigma Software Group has demonstrated strong expertise across various industries, particularly in Advertising & Marketing, Education, Financial Services, Food & Beverage, and Automotive. Clients consistently highlight their efficiency, creativity, and technical capabilities, with notable results in project management and collaboration. Overall sentiment is overwhelmingly positive, with many clients emphasizing their adaptability, cost-effectiveness, and alignment with company values, positioning Sigma as a strong candidate for projects in these sectors.
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IT Services Financial services Other Industry Food & Beverage Information technology Education Construction Arts, entertainment & music Software Sports Manufacturing Automotive Retail Real estate Design Healthcare Logistics & Supply Chain Advertising & marketing Gambling

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Average Project Cost Breakdown

$1,000,000 to $9,999,999 (8) $200,000 to $999,999 (7) $50,000 to $199,999 (5) $10,000 to $49,000 (3) Less than $10,000 (1)

What Clients Have Said
Clients consistently praise Sigma Software Group for their competitive pricing and strong value for money. Feedback highlights that their services fit well within budget constraints while delivering high-quality work. One client noted, "Good value for cost" and another emphasized that Sigma's pricing was a significant factor in choosing them over competitors. Overall, clients appreciate the balance between cost and the quality of services provided, often remarking on the efficiency and expertise of the Sigma team.
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Sofia, Bulgaria

bulevard "Cherni vrah"
Sofia, Bulgaria 1415
10 - 15

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App Streams Ltd

5.0 9 reviews

$25,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% IoT Development

30% Web Development

25% Mobile App Development +3 services

15% Application Testing

10% AI Development

10% UX/UI Design

App Streams Ltd is a versatile software development company specializing in front-end and back-end solutions, mobile applications, and full-stack services. Across various industries, they have consistently received positive feedback for their professionalism, timely delivery, and ability to integrate seamlessly with client teams. Approximately 100% of reviews highlight their strong communication, alignment in values, and exceptional project management skills.

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Reviews mention Collaborative
Clients have consistently praised App Streams Ltd for their collaborative approach, noting that the team operates seamlessly as an extension of the client's staff. Feedback highlights their adaptability, responsiveness, and proactive engagement, with one client stating that team members take the initiative to fully understand problems before providing solutions. The CEO's accessibility and commitment to partnership further enhance the collaborative spirit, making App Streams a valued ally in achieving project goals.

Web App Design & Dev for HealthTech Company

5.0 Nov 13, 2025

App Streams has demonstrated exceptional project management throughout our engagement. Their team is seamlessly embedded within our internal product and engineering organization, operating as an extension of our own staff. They are friendly, easy to collaborate with, and—importantly—have never missed a deadline. Their frontend engineer, in particular, delivers work at an impressive pace; at times, our backend development has had to accelerate just to keep up with his speed and efficiency. Their CEO, Stoyan, is also extremely accessible and collaborative. He approaches every challenge with a solutions-oriented mindset and has been a true partner in ensuring our shared success.
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Average Project Cost Breakdown

$10,000 to $49,000 (1) $50,000 to $199,999 (1) $200,000 to $999,999 (1)

What Clients Have Said
Clients consistently report that App Streams Ltd offers excellent value for money, with many highlighting that their pricing aligns well with budget expectations. For instance, one client noted, 'Great culture fit' and 'Good value for cost,' while another remarked on their 'exceptional project management' and timely delivery of services. Overall, the sentiment is overwhelmingly positive, with clients expressing satisfaction with the quality of work relative to the cost, making App Streams a preferred partner for various projects.
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More responsive than most other service providers

App Streams Ltd is very responsive
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Bulgaria (4) United States (2) England (2)

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Civitta

4.9 23 reviews

$25,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% IoT Development

25% AI Development

20% Cloud Consulting & SI +3 services

20% Custom Software Development

15% Enterprise App Modernization

10% Mobile App Development

Civitta is a digital transformation consultancy that provides IT services, SaaS development, and AI solutions. Reviews indicate strong project management, effective communication, and timely delivery, with a high client satisfaction rate of 95%. The recurring theme is their capability to integrate seamlessly with client teams and deliver innovative solutions that meet complex business needs.

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Reviews mention Great project management
Clients have consistently praised HackTech for their exceptional project management capabilities. One client noted their 'massive part in delivering the project on time,' while another highlighted that 'HackTech always deployed skilled project managers to keep projects on schedule.' The overall sentiment reflects a strong appreciation for their proactive communication and ability to meet deadlines, making them a reliable partner in project execution.

Custom Software Dev for Sensory Retail Experience Platform

5.0 Jan 22, 2025

HackTech managed the deliverables well and played a massive part in delivering the project on time. Their commitment to the project and effective communication were impressive, contributing significantly to the overall success.
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SaaS, APIs & App Dev Services for Omnichannel Software Co

5.0 Feb 20, 2024

HackTech always deployed skilled project managers to keep projects on schedule, stakeholders informed, and development teams on track and focused.
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Branding & Web Dev for GPS Tracking Solution Provider

5.0 Sep 20, 2023

Excellent project management. The team is always on top of things. Deadlines are always met. The team was proactive in the ideas/design stage as well as the implementation stage.
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Mobile App Dev for Media Company

4.5 Nov 28, 2017

The initial concept was for an application, but we’ve released the touch-panel system first. We always changed our minds, but the team from Mediapark was flexible. Project management is their strongest point. The owners of their company have their own vision, which helped us maintain flexibility. They respond quickly and have worked out good prices for us. We were never dissatisfied with deadlines or anything else.
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Mobile App Dev for Commercial Kitchen Equipment

4.5 Jan 30, 2017

Mediapark Group has a very good project management team. There is strong follow-through, they're always available, and they try to understand our problems.
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Industry Experience

Civitta has demonstrated expertise across various industries, including Advertising & Marketing, Information Technology, Financial Services, and Business Services. Reviews consistently highlight their strengths in project management, timely delivery, and effective communication. Notably, clients in Advertising & Marketing praise their ability to enhance operational efficiency and reporting capabilities, while those in IT commend their software development and integration skills. Overall, Civitta is well-regarded for its innovative solutions and collaborative approach, making them a strong fit for projects across multiple sectors.
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Advertising & marketing Information technology Other industries Business services Financial services Media

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Average Project Cost Breakdown

$10,000 to $49,000 (5) $50,000 to $199,999 (5) $200,000 to $999,999 (3) Less than $10,000 (1)

What Clients Have Said
Clients consistently regard Civitta as offering good value for money, often highlighting their pricing as fitting within budget constraints. For instance, one client noted that Civitta's pricing 'fit our budget' while delivering high-quality outcomes. Overall sentiment reflects satisfaction with the cost-to-value ratio, with multiple reviews underscoring the company's ability to deliver effective solutions within reasonable financial parameters.
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United States (5) Lithuania (4) Russia (2) Australia (1) Hong Kong (1) Romania (1) United Arab Emirates (1) England (1)

This provider is fluent in 5 languages:

English

Polish

Estonian

Finnish

Ukrainian

This provider is available in 1 time zone:

Central European Time (CET)

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Quanterall

5.0 3 reviews

$50,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Services provided

15% IoT Development

30% Blockchain

30% Custom Software Development +2 services

15% Web Development

10% Mobile App Development

Quanterall is a software development company specializing in blockchain, smart contracts, and financial transaction systems. They are praised for their technical expertise, effective communication, and professionalism, with 100% of reviews mentioning high-quality deliverables and strong project management. Clients value Quanterall's flexibility and ability to integrate advanced technologies into complex projects efficiently.

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Reviews mention Professional
Quanterall has received positive feedback regarding their professionalism, particularly in their ability to foster strong relationships and provide technical expertise. A client highlighted their impressive motivation and noted that the partnership was built on a foundation of trust and talent development. The client's decision to collaborate with Quanterall stemmed from their prior positive experiences and the company's commitment to learning and development, reinforcing an overall sentiment of satisfaction and reliability.

EMV Simulator for Financial Technology Company

5.0 Nov 29, 2021

This project was entirely led by Sumup. However, it wouldn't be successful without the technical expertise provided by Quanterall. I was impressed with their motivation and professionalism.
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Industry Experience

Quanterall has demonstrated expertise across multiple industries, notably IT Services, Financial Services, and Logistics & Supply Chain. Clients commend their strong programming capabilities in Haskell and Erlang, effective testing practices, and flexibility in project management. The overall sentiment is highly positive, with clients noting Quanterall's ability to deliver high-quality solutions tailored to specific industry needs, particularly in developing financial smart contracts and integrated software solutions.
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IT Services Financial services Logistics & Supply Chain

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Average Project Cost Breakdown

$10,000 to $49,000 (1) $50,000 to $199,999 (1)

What Clients Have Said
Quanterall is noted for delivering high-quality solutions that provide good value for money. Clients expressed satisfaction with the cost-effectiveness of their services, with one reviewer highlighting the company's ability to enhance existing systems efficiently. Another emphasized the strong relationship built through talent development, which contributed to the perceived value. Overall, feedback indicates that clients found Quanterall's pricing aligned with the quality of work delivered, reinforcing a positive sentiment regarding their cost and value proposition.
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Bulgaria (1) Singapore (1) England (1)

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BGO Software - The Digital Health Lab

4.8 18 reviews

$10,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Services provided

10% IoT Development

50% Custom Software Development

10% Application Management & Support +3 services

10% IT Managed Services

10% IT Strategy Consulting

10% Mobile App Development

BGO Software - The Digital Health Lab is a software development company specializing in creating solutions for healthcare, cybersecurity, and analytics. Client reviews highlight their professionalism, technical expertise, and commitment to project timelines, with 100% indicating satisfaction with deliverables and communication. Approximately 90% of reviewers emphasize their adaptability and understanding of complex project needs, underscoring their reputation for fostering strong client relationships and delivering tailored solutions.

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Industry Experience

BGO Software has demonstrated expertise across diverse industries including healthcare, cybersecurity, business services, and education. Clients commend their strong project management, adaptability, and proactive communication. In healthcare, they have improved patient support and clinical trial management systems. Their work in cybersecurity notably resulted in a market-ready vulnerability management tool. Overall, feedback reveals a highly positive sentiment, making BGO Software a strong fit for projects within regulated environments, digital health solutions, and software development for dynamic business landscapes.
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Government Healthcare Pharmaceuticals Business services Research Arts, entertainment & music Education Software Consulting Real estate Medical IT Services Energy & natural resources

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Average Project Cost Breakdown

$50,000 to $199,999 (2) $200,000 to $999,999 (1)

What Clients Have Said
Clients consistently highlight BGO Software's strong value for money, with comments emphasizing their competitive pricing and high-quality deliverables. For instance, one client noted that while BGO was not the cheapest option, the exceptional skill and quality justified the investment. Another client appreciated the adaptability to budget constraints and the overall 'good value for cost.' Overall, the sentiment reflects satisfaction with the balance of cost and the value provided through their services.
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Switzerland (4) United States (4) Bulgaria (3) England (3) Netherlands (1)

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Review Rating from Clients

5.0/5.0

Quality

4.8

Schedule

4.8

Cost

4.8

Willing to Refer

5.0

Local clients commend BGO Software for their deep understanding of healthcare and cybersecurity needs, delivering innovative, user-friendly software that meets evolving requirements. They value their fast response times, collaborative approach, and consistent project success.
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eLando

4.9 8 reviews

$25,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% IoT Development

30% Custom Software Development

10% Cloud Consulting & SI +5 services

10% Cybersecurity

10% IT Strategy Consulting

10% Low/No Code Development

10% Mobile App Development

10% Web Development

eLando is a software development company specializing in custom software solutions, digital transformation, and technical consulting. The overarching feedback from their reviews is overwhelmingly positive, with clients praising their technical expertise, responsiveness, and reliability. Approximately 90% of reviewers highlight eLando's ability to deliver projects on time and within budget, noting their excellent value for cost and strong alignment with client needs and company values.

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Industry Experience

eLando has demonstrated significant expertise in Information Technology, Retail, and other sectors. In the IT domain, clients praised their proficiency in software engineering, cloud solutions, and digital transformation, especially for telecom and regulated industries. Retail clients noted their technical strengths in developing critical components and strategies for existing systems. Overall, feedback highlights eLando's responsive communication, strong project management, and ability to deliver high-quality results, making them a suitable partner for clients in technology-driven industries.
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Information technology Consulting IT Services Retail Other Industry

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Average Project Cost Breakdown

$200,000 to $999,999 (3) $50,000 to $199,999 (2) $10,000 to $49,000 (1)

What Clients Have Said
eLando AD has received positive feedback regarding their cost and value for money, with clients highlighting that their pricing fits within budgetary constraints while still delivering high-quality services. One client noted the 'good value for cost' and another emphasized their 'competitive pricing.' Overall, the sentiment reflects satisfaction with eLando's ability to provide exceptional service at a reasonable price, making them a preferred choice for various projects.
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More responsive than most other service providers

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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

4.8

Willing to Refer

5.0

Clients in the Sofia area praise eLando for their expertise in complex software development, including enterprise systems and digital transformation projects. They highlight successful outcomes like improved performance, scalability, and timely delivery, emphasizing strong communication and a good cultural fit.
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Devision

4.9 12 reviews

$50,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Services provided

20% IoT Development

40% Custom Software Development

30% Web Development +1 service

10% Mobile App Development

Devision is a versatile software development company providing services such as web application development, software updates, and staff augmentation. Reviews highlight their expertise in handling complex projects and their ability to integrate well with clients' teams. Approximately 90% of feedback is positive, with clients appreciating their professionalism, technical skills, and effective communication. Around 60% of reviewers specifically commend their project management capabilities, though some mention occasional challenges in estimating project timelines. Overall, Devision is recognized for delivering value and high-quality solutions.

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Industry Experience

Devision has demonstrated expertise across various industries, including Education, Energy & Natural Resources, Manufacturing, Hospitality, and others. Clients commend their strong project management, technical capabilities, and ability to enhance operational efficiency. Positive feedback highlights their responsiveness and quality of work, leading to increased user engagement and revenue growth. Overall, Devision is well-suited for projects in sectors requiring innovative software solutions and team augmentation.
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Energy & natural resources Human Resources Software Hospitality & leisure Arts, entertainment & music Manufacturing Chemicals & Biotechnology Education IT Services

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Average Project Cost Breakdown

$10,000 to $49,000 (3) Less than $10,000 (2) $50,000 to $199,999 (1)

What Clients Have Said
Clients consistently highlight Devision's competitive pricing and strong value for money. One client noted their selection was based on 'good value for cost,' while another emphasized that Devision's pricing fit their budget and aligned with their cultural needs. Overall sentiment reflects satisfaction with the quality of work relative to the costs, as evidenced by projects that led to significant business improvements, such as a 30% increase in income from additional services shortly after project completion.
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Bulgaria (3) Netherlands (2) Croatia (1) Germany (1) Switzerland (1) United Arab Emirates (1) United States (1) England (1)

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Aionys

5.0 13 reviews

$5,000+

$25 - $49 / hr

50 - 249

Sofia, Bulgaria

Services provided

10% IoT Development

30% Custom Software Development

15% AI Development +4 services

15% Mobile App Development

10% Enterprise App Modernization

10% IT Staff Augmentation

10% Low/No Code Development

Aionys is an IoT development company specializing in IoT solutions and integration for the manufacturing industry. The reviews indicate a high level of satisfaction, with 100% of clients praising their seamless implementation and effective project management. Clients highlight Aionys's ability to enhance operational efficiency through automation and real-time inventory monitoring, underscoring their expertise in cyber-physical software development.

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Reviews mention Adaptable
Clients consistently highlight Aionys' adaptability in project management and solution delivery. One notable instance involved the implementation of an agile methodology, allowing for flexibility and timely adjustments based on evolving requirements. The project manager's proactive risk management and clear communication protocols further emphasized Aionys' commitment to adapting to client needs. Overall, the sentiment is highly positive, with clients appreciating Aionys' ability to align with their business philosophies and deliver tailored solutions.

Software Platform Dev for Automated Deployment & Testing Co

5.0 Jul 19, 2024

The project manager implemented an agile methodology, which allowed for flexibility and adaptability. The project was divided into sprints, with each sprint delivering a usable piece of the system. This approach ensured continuous delivery and allowed for adjustments based on feedback and changing requirements. Aionys' philosophy is built on open communication, individualized solutions, adaptability, efficiency, and reputation.
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1 of 1 IoT Development reviews are 5 stars

$50,000 – $199,999 avg. project cost

IoT Development PROJECT HIGHLIGHT

Warehouse Management System for Trading Operations Company
5.0 — Aionys developed a warehouse management system for a trading company. Aionys developed and implemented a solution to optimize and automate the client's operations related to the storage of flammable Read more
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Industry Experience

Aionys has demonstrated expertise across various industries, including manufacturing, healthcare, eCommerce, real estate, and software development, consistently receiving positive feedback for their project management, technical skills, and communication. Clients in manufacturing praised their automation solutions, while those in healthcare highlighted their adaptability in developing safety and monitoring systems. In eCommerce and real estate, Aionys delivered efficient mobile and web applications. Overall, sentiment across industries reflects satisfaction with Aionys' responsiveness, quality of deliverables, and alignment with client values.
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IT Services Manufacturing Other Industry Arts, entertainment & music Healthcare Software Real estate Consulting Financial services Design eCommerce

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Average Project Cost Breakdown

$10,000 to $49,000 (3) $50,000 to $199,999 (3) $200,000 to $999,999 (1)

What Clients Have Said
Clients generally express satisfaction with Aionys' cost-effectiveness and value for money. For instance, one client noted that Aionys' pricing fit their budget and provided good value for the cost. Another client highlighted that the costs were predictable and remained within the target range. Overall, the sentiment reflects a positive perception of Aionys' pricing structure, with many clients appreciating the balance between quality and affordability in their services.
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ThingsLog

5.0 1 review

$1,000+

Undisclosed

10 - 49

Sofia, Bulgaria

Services provided

40% IoT Development

20% IT Managed Services

10% AI Development +3 services

10% Application Management & Support

10% Mobile App Development

10% Web Development

ThingsLog is an IoT solutions provider specializing in designing, documenting, and implementing IoT devices and applications for client projects. The company consistently receives positive feedback, with 100% of reviewers mentioning their innovative and cost-efficient solutions. Clients commend their project management skills and responsiveness, appreciating their ability to deliver complex projects within budget and requirements.

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Industry Experience

ThingsLog has demonstrated strong expertise in the IT Services industry, particularly in IoT solutions and cybersecurity. Their innovative approaches have led to significant impacts, such as a 35% reduction in consumption leaks for clients. The team is noted for its exceptional project management and responsiveness, fostering long-term collaborations. Potential clients in IT services seeking advanced IoT integrations and data solutions would find ThingsLog a valuable partner.
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IT Services

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Average Project Cost Breakdown

$50,000 to $199,999 (1)

What Clients Have Said
Clients highlight ThingsLog's competitive pricing and the high value delivered through innovative IoT solutions. One client noted a $50,000–$60,000 investment, emphasizing that their collaboration has led to a 35% reduction in consumption leaks, showcasing cost efficiency. Overall, the sentiment is positive, with clients expressing satisfaction with the quality of service relative to investment, recommending ThingsLog as a wise choice for potential customers.
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Review Rating from Clients

5.0/5.0

Quality

4.5

Schedule

4.0

Cost

5.0

Willing to Refer

5.0

Clients in Sofia praise ThingsLog for their innovative IoT solutions, including secure data backup and cost-efficient leak reduction. They highlight the team's expertise in complex projects involving design, documentation, and implementation, emphasizing strong project management and responsiveness.
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Dision

5.0 1 review

$10,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Services provided

20% IoT Development

40% Mobile App Development

20% UX/UI Design +2 services

10% Wearable App Development

10% Web Development

Dision is an Android development company known for its exceptional technical skills and efficient project management. Reviewers consistently praise their organizational abilities, timely delivery, and innovative contributions, particularly in integrating client processes. Despite minor remote communication challenges, the feedback is overwhelmingly positive, with 100% of reviewers appreciating their adaptability and eagerness to tackle complex projects.

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Industry Experience

Dision has demonstrated strong expertise in the Information Technology sector, specifically in developing Android applications for preschool administration software. Feedback highlights their organizational skills, timely delivery, and collaborative approach, which have led to significant user engagement across 700 preschools in Southeast Asia. Clients appreciate their adaptability to new processes, though cultural communication nuances may arise. Overall, Dision is well-suited for projects requiring innovative mobile solutions in the educational technology industry.
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Information technology

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Average Project Cost Breakdown

$10,000 to $49,000 (1)

What Clients Have Said
Clients have noted that Dision offers competitive pricing for their services, with one client investing around $50,000 for a substantial project involving multiple Android applications. Overall sentiment reflects a strong perception of value for money, as clients appreciate the team's organizational skills and timely delivery. The ability to integrate well with existing processes and provide innovative solutions further enhances their perceived value, despite minor concerns regarding communication due to cultural differences.
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Sofia, Bulgaria

ul. Tsaribrodska 94
Sofia, Bulgaria 1309
2 - 5

+359.87.656.6334

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MENA Software

4.8 4 reviews

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% IoT Development

25% Blockchain

15% Back Office Outsourcing +5 services

10% BI & Big Data Consulting & SI

10% Business Consulting

10% Custom Software Development

10% Mobile App Development

10% Web Development

MENA Software is a versatile software development company specializing in platform development, blockchain solutions, and app creation. Their services have received overwhelmingly positive feedback, with approximately 100% of clients noting their effective project management and dedication. Clients consistently highlight the company's strong competence, high-quality output, and affordability, with no major areas for improvement suggested.

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Industry Experience

MENA Software has demonstrated expertise across several industries, including Information Technology, Advertising & Marketing, Other Industries, and Gaming. Clients praised their reliable solutions, effective project management, and strong communication. In IT, they provided value through software development; in Marketing, they excelled in blockchain projects; in Gaming, they developed engaging applications with impressive graphics. Overall, sentiment is positive, highlighting MENA Software's dedication, competence, and ability to meet diverse client needs.
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Information technology Advertising & marketing IT Services Gaming

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Average Project Cost Breakdown

$10,000 to $49,000 (2) Less than $10,000 (1) $50,000 to $199,999 (1)

What Clients Have Said
MENA Software has been recognized for offering competitive pricing and delivering significant value for money. Clients noted the cost-effectiveness of their services, with one stating they provided updates at an 'affordable price.' Effective project management and dedication were highlighted, contributing to a positive perception of value. Overall, the sentiment reflects satisfaction with the quality of work relative to the costs incurred, with no major complaints regarding pricing.
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Review Rating from Clients

4.8/5.0

Quality

5.0

Schedule

4.8

Cost

5.0

Willing to Refer

4.8

Clients in the area emphasize MENA Software's strong technical skills and project execution in web and blockchain development. They appreciate the team's dedication, effective communication, and ability to add value through innovative, reliable software solutions.
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findy IoT

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Sofia, Bulgaria

Services provided

70% IoT Development

15% Custom Software Development

15% Engineering

Findy IoT is an IoT development company. They were launched in 2015 and provide IoT development and Custom Software Development.
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IndigoVerge

Not yet reviewed

$10,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

30% IoT Development

30% Custom Software Development

15% Web Development +3 services

10% Business Consulting

10% Mobile App Development

5% Social Media Marketing

IndigoVerge is a software development company. In Sofia, Bulgaria, the firm was launched in 2006. Their team focuses on Custom Software Development and IoT development.
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Soitron

Not yet reviewed

$5,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% IoT Development

25% IT Managed Services

20% IT Staff Augmentation +4 services

15% Cybersecurity

15% Web Development

10% Custom Software Development

5% Back Office Outsourcing

Soitron is a Bratislava 25, Slovakia-based IT managed services company. The team provides IT managed services and IT staff augmentation.
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Sofia, Bulgaria

XS Tower, 5 “Panorama Sofia” Str.
Sofia, Bulgaria 1766
76 - 100

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Wildorb Interactive Design Studio

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% IoT Development

10% Application Testing

10% Branding +7 services

10% Custom Software Development

10% E-Commerce Development

10% Graphic Design

10% Mobile App Development

10% UX/UI Design

10% Web Design

10% Web Development

Wildorb Interactive Design Studio, a software development firm, is based in Sofia, Bulgaria. They provide Custom Software Development and UX/UI Design.
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NCB Ltd

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% IoT Development

30% Custom Software Development

30% Web Development +2 services

20% Application Testing

10% Blockchain

Founded in 2013, NCB Ltd is a software development firm. Their team offers Custom Software Development and Web Development.
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OBG

Not yet reviewed

$10,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Services provided

10% IoT Development

30% Mobile App Development

30% Web Development +3 services

10% Custom Software Development

10% Enterprise App Modernization

10% IT Managed Services

App development firm OBG was founded in 2014. The team focuses on Mobile App Development and Web Development and is based in Sofia, Bulgaria.
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Smartaly

Not yet reviewed

$25,000+

$50 - $99 / hr

10 - 49

Pravets, Bulgaria

Services provided

60% IoT Development

20% AI Development

20% Custom Software Development

Smartaly, an IoT development company, was founded in 2019. The team specializes in IoT development and Custom Software Development and is in La Roquette-sur-Siagne, France and Pravets, Bulgaria.
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Pravets, Bulgaria

sq. Todor Jivkov
Pravets, Bulgaria 2161
16 - 20

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At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.

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Ability to deliver

Focus

Proven

Market Leaders

Emerging

Niche

Clutch Leaders Matrix

Rollover to see company insights or click a company below for more details.

1 Sigma Software Group

2 App Streams Ltd

3 Civitta

4 Quanterall

5 BGO Software - The Digital Health Lab

6 eLando

7 Devision

8 Aionys

9 ThingsLog

10 Dision

11 MENA Software

A Clutch Leaders Matrix provides a broad view of the top-performing companies in a particular service or location. Each company featured in a Leaders Matrix is evaluated based on Focus and Ability to Deliver. The size of each circle indicates that company’s size.

By using verified reviews, focused service details, and real project data, the Leaders Matrix highlights companies that consistently deliver and stand out from the rest. Each company’s position is based on how well they focus on a service area and how consistently they deliver results, helping you make informed, confident decisions. Learn More

Focus (x-axis)

Focus accounts for a company’s specialization within a certain service.

Ability to Deliver (y-axis)

Ability to Deliver considers three criteria:

Client feedback and reviews
Work experience and previous projects
Market presence and reputation in the industry

List of the Top 11 Sofia IoT Developers

Sigma Software Group

$50,000+

$50 - $99 / hr

1,000 - 9,999

Sofia, Bulgaria

Ability to deliver

37.4/40.0

17.6/20 Reviews

10/10 Clients & Experience

9.8/10 Market Presence

Service focus

11% IoT Development

89% Other

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App Streams Ltd

$25,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

35.4/40.0

17.6/20 Reviews

10/10 Clients & Experience

7.8/10 Market Presence

Service focus

10% IoT Development

90% Other

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Civitta

$25,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Ability to deliver

33.8/40.0

16.8/20 Reviews

10/10 Clients & Experience

7/10 Market Presence

Service focus

10% IoT Development

90% Other

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Quanterall

$50,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Ability to deliver

33.5/40.0

16.2/20 Reviews

10/10 Clients & Experience

7.2/10 Market Presence

Service focus

15% IoT Development

85% Other

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BGO Software - The Digital Health Lab

$10,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Ability to deliver

33.9/40.0

15.6/20 Reviews

10/10 Clients & Experience

8.3/10 Market Presence

Service focus

10% IoT Development

90% Other

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eLando

$25,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

32.2/40.0

17.6/20 Reviews

10/10 Clients & Experience

4.6/10 Market Presence

Service focus

10% IoT Development

90% Other

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Devision

$50,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Ability to deliver

28.5/40.0

16/20 Reviews

7.2/10 Clients & Experience

5.2/10 Market Presence

Service focus

20% IoT Development

80% Other

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Aionys

$5,000+

$25 - $49 / hr

50 - 249

Sofia, Bulgaria

Ability to deliver

29.9/40.0

16.8/20 Reviews

7.8/10 Clients & Experience

5.3/10 Market Presence

Service focus

10% IoT Development

90% Other

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ThingsLog

$1,000+

Undisclosed

10 - 49

Sofia, Bulgaria

Ability to deliver

22.7/40.0

16.2/20 Reviews

1.2/10 Clients & Experience

5.3/10 Market Presence

Service focus

40% IoT Development

60% Other

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Dision

$10,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Ability to deliver

21.4/40.0

16.2/20 Reviews

0/10 Clients & Experience

5.2/10 Market Presence

Service focus

20% IoT Development

80% Other

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MENA Software

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

20.8/40.0

15.6/20 Reviews

0/10 Clients & Experience

5.2/10 Market Presence

Service focus

10% IoT Development

90% Other

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findy IoT

Undisclosed

Undisclosed

10 - 49

Sofia, Bulgaria

Ability to deliver

12.6/40.0

0/20 Reviews

8/10 Clients & Experience

4.6/10 Market Presence

Service focus

70% IoT Development

30% Other

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IndigoVerge

$10,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

9.3/40.0

0/20 Reviews

4/10 Clients & Experience

5.3/10 Market Presence

Service focus

30% IoT Development

70% Other

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Soitron

$5,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Ability to deliver

8.8/40.0

0/20 Reviews

3.2/10 Clients & Experience

5.6/10 Market Presence

Service focus

10% IoT Development

90% Other

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Wildorb Interactive Design Studio

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

5.2/40.0

0/20 Reviews

0/10 Clients & Experience

5.2/10 Market Presence

Service focus

10% IoT Development

90% Other

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NCB Ltd

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Ability to deliver

4.6/40.0

0/20 Reviews

0/10 Clients & Experience

4.6/10 Market Presence

Service focus

10% IoT Development

90% Other

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OBG

$10,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Ability to deliver

4.6/40.0

0/20 Reviews

0/10 Clients & Experience

4.6/10 Market Presence

Service focus

10% IoT Development

90% Other

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Smartaly

$25,000+

$50 - $99 / hr

10 - 49

Pravets, Bulgaria

Ability to deliver

4.9/40.0

0/20 Reviews

0/10 Clients & Experience

4.9/10 Market Presence

Service focus

60% IoT Development

40% Other

View Profile Visit Website

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Top Internet of Things Companies in Sofia

List of the Top Sofia IoT Developers

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Average Project Cost Breakdown

What Clients Have Said

Yalantis is very responsive

Reviews mention High-quality work

Custom Software & IoT Development for SaaS Company

Staff Aug & Software Dev for Ad Insertion Platform Provider

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Platform Dev Services for Pharmaceutical Company

Reviewed 3 times in the past 6 months

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Cogniteq is very responsive

Reviews mention Well-organized projects

Custom Software Dev for Motor Vehicles Manufacturing Company

Logo Marketplace for Design Platform

Web & Software Development for Property Tech Firm

Staff Augmentation & Development for Telecom Media Company

Custom Software Development for Airlines Association

Industry Experience

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What Clients Have Said

Reviews mention Collaborative

Web App Design & Dev for HealthTech Company

Average Project Cost Breakdown

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App Streams Ltd is very responsive

Reviews mention Great project management

Custom Software Dev for Sensory Retail Experience Platform

SaaS, APIs & App Dev Services for Omnichannel Software Co

Branding & Web Dev for GPS Tracking Solution Provider

Mobile App Dev for Media Company

Mobile App Dev for Commercial Kitchen Equipment

Industry Experience

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Reviews mention Professional

EMV Simulator for Financial Technology Company

Industry Experience

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What Clients Have Said

Industry Experience

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Average Project Cost Breakdown

What Clients Have Said

Industry Experience

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Average Project Cost Breakdown

What Clients Have Said

eLando is very responsive

Industry Experience

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What Clients Have Said

Reviews mention Adaptable

Software Platform Dev for Automated Deployment & Testing Co

Warehouse Management System for Trading Operations Company

Industry Experience

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What Clients Have Said

Industry Experience

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Average Project Cost Breakdown

What Clients Have Said

Industry Experience

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Average Project Cost Breakdown

What Clients Have Said

Industry Experience

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What Clients Have Said

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