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Top Blockchain Companies & Developers in Johannesburg

Ratings Updated: April 18, 2026

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Featured

What are Featured Providers?
Innowise

4.9 72 reviews
Premier Verified

$10,000+

$50 - $99 / hr

1,000 - 9,999

Serves Johannesburg, South Africa

Services provided

10% Blockchain

10% AI Agents

10% AI Consulting +7 services

10% AI Development

10% BI & Big Data Consulting & SI

10% Cloud Consulting & SI

10% Custom Software Development

10% Cybersecurity

10% IT Staff Augmentation

10% Mobile App Development

Innowise is a Blockchain Development company noted for its expertise in Blockchain Technology, Smart Contract Development, and Decentralized System Development. Across their reviews, 100% of clients highlight their professionalism, responsiveness, and ability to meet deadlines. Additionally, 80% of reviewers commend their strategic consulting, further emphasizing their depth of expertise and commitment to delivering high-quality blockchain solutions.

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Reviews mention Personable
The feedback highlights Innowise Group's personable approach, noting their 'terrific interpersonal skills' and attentiveness to client needs. The CEO of Allegro Consulting emphasized feeling heard, stating that the team listened to both technical ideas and personal frustrations. Additionally, their 'humanosity' was particularly praised, contributing to a strong sense of collaboration and understanding throughout the project.

iOS Mobile App Development for Music Software Company

5.0 Apr 25, 2023

The project management is exceptional. They are very attentive to all the technical details and combine that with terrific interpersonal skills. You feel free to express both your technical ideas as well as your dreams and frustrations. You feel in the end that genuine folks have listened fairly and carefully.
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1 of 1 reviews is 5 stars

Unknown avg. project cost

Reviewed 1 time in the past 6 months
In the past six months, Innowise has received positive feedback for their ability to deliver custom database solutions efficiently. A client praised their effective project management, noting that Innowise outperformed a previous vendor by adhering to timelines and budgets. The integration of workflows and reporting was highlighted as a significant improvement, reducing labor for the client. Overall, sentiments reflect satisfaction with Innowise's professionalism and the quality of their deliverables.
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Average Project Cost Breakdown

$10,000 to $49,000 (24) $50,000 to $199,999 (17) $200,000 to $999,999 (10) Less than $10,000 (1)

What Clients Have Said
Clients consistently praised Innowise Group for their competitive pricing and excellent value for money. Feedback highlighted that their services fit various budgets while delivering high-quality results, as noted by multiple clients who emphasized good cost-to-value ratios. For instance, a CEO mentioned that Innowise's pricing fit their budget and provided great value, while another client appreciated the fair pricing during their ongoing engagement. Overall, the sentiment towards Innowise's cost-effectiveness is overwhelmingly positive, suggesting a strong alignment between quality and affordability.
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United States (15) Germany (10) Italy (6) England (4) Switzerland (4) Israel (3) Estonia (3) Luxembourg (2) France (2) Ireland (2) Lithuania (1) Qatar (1) Armenia (1) Finland (1) New Zealand (1) Norway (1) Poland (1) Georgia (1) South Africa (1) Sweden (1) Denmark (1) Thailand (1) Belarus (1) Bosnia and Herzegovina (1)

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Nextrope

5.0 18 reviews
Premier Verified

$25,000+

$50 - $99 / hr

10 - 49

Serves Johannesburg, South Africa

Services provided

70% Blockchain

30% Custom Software Development

Nextrope is a Blockchain Development company specializing in Blockchain Solutions, Smart Contract Development, and Crypto Application Development. All reviews highlight their proactive approach, adaptability, and strong sense of ownership, with 100% positive feedback on their ability to align technological and business strategies effectively. Their expertise contributed to a 60% reduction in manual work and faster investment processes.

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Reviews mention Flexible
The sentiment regarding flexibility in client feedback is overwhelmingly positive. Clients consistently noted Nextrope's adaptability and responsiveness to changing requirements. For instance, one client highlighted their 'remarkable flexibility and responsiveness' during project execution, while another praised their 'willingness to challenge assumptions' and adapt to evolving business needs. Overall, clients were impressed by Nextrope's ability to deliver high-quality work on time, demonstrating a strong commitment to meeting client expectations.

Business Dev Consultancy for Construction Services Startup

5.0 May 27, 2022

The Nextrope team was very quick in first organizing the introductory meeting, understanding our needs, coming up with a workshop proposal, and finally doing the analysis. Then, they were flexible in logistics of planning our workshop, and delivered high-quality materials from the consultancy.
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EIP-20 Ethereum Token for Web3 Solution Provider

5.0 Mar 12, 2022

It was a pleasure to work with a competent team. The cooperation went smooth and they followed through on their promises. Also, the Nextrope team was very flexible and prepared to go above and beyond to complete the project.
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Software Development for Interim CFO Company

5.0 Jul 16, 2020

It’s amazing how much we achieved with such reasonable budget and time! Nextrope team's flexibility and responsivness to changing requirements on our side is remarkable.
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API Development for Banking Company

5.0 Apr 17, 2020

Nextrope fully met bank's expectations regarding cooperation meeting necessary deadlines and providing fast, flexible and reliable service.
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Blockchain Platform Dev for Real Estate Investment Platform

5.0 Dec 5, 2025

Beyond their flexibility, what I valued the most was the team’s proactive approach. Nextrope does not focus solely on the technology itself; they take the time to understand the broader business context and continuously advise on whether certain technical decisions will positively impact the overall product and protocol. Whenever new requirements emerged even if they went beyond the original scope the team responded quickly, responsibly, and with genuine commitment. Our business model and product vision evolved throughout the project, yet Nextrope consistently adapted to these changes with impressive agility.
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Industry Experience

Nextrope has demonstrated expertise across various industries, notably in Business Services, Financial Services, Blockchain, and Real Estate. Clients commend their high-quality deliverables, timely project management, and deep understanding of technology, particularly in blockchain solutions. The overall sentiment is overwhelmingly positive, with businesses in PropTech, EdTech, and Finance praising Nextrope's ability to innovate and enhance operational efficiency. Their consulting and development services have significantly impacted clients' strategic goals, making them a strong fit for projects in these sectors.
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Business services IT Services Financial services Education Manufacturing Engineering Retail Information technology Media Real estate

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More responsive than most other service providers

Nextrope is very responsive
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Poland (11) United Arab Emirates (2) Estonia (1) Norway (1) England (1)

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RedDuck

5.0 13 reviews
Verified

$10,000+

$50 - $99 / hr

10 - 49

Serves Johannesburg, South Africa

Services provided

100% Blockchain

RedDuck is a blockchain development company specializing in delivering comprehensive blockchain solutions, including smart contract development, distributed ledger technology, and decentralized application (DApp) development. Clients consistently praise their technical precision, proactive communication, and ability to deliver projects on time, with a 100% satisfaction rate highlighted across multiple reviews. Their expertise in blockchain technology and strategic product development is noteworthy.

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Reviews mention Exceeds expectations
Clients have consistently reported that RedDuck exceeds expectations, particularly in their ability to manage complex, full-cycle development projects with technical precision and creative vision. One CEO noted their proactive approach and strong blockchain expertise, which facilitated the timely launch of a full-featured DeFi platform. The project management was highlighted as exemplary, with clear communication and adaptability to evolving requirements, resulting in a high level of professionalism and satisfaction with the overall outcome.

Blockchain Development for FinTech Company

5.0 Apr 23, 2025

RedDuck demonstrated excellent project management throughout the engagement. They provided regular progress updates, stuck closely to the development timeline, and were transparent about any adjustments. Communication was clear and responsive — our feedback was always taken into account, and changes were implemented quickly. Overall, they showed a high level of professionalism and adaptability to our evolving requirements. Their team was proactive, detail-oriented, and genuinely invested in the success of our platform. Given the scale and complexity of the project, I didn't personally encounter any issues or areas that stood out as needing improvement. RedDuck handled everything with professionalism, and their structured approach left little room for concern. That said, as with any long-term development partnership, there’s always space to evolve and refine internal processes over time — but in my case, the collaboration was smooth and exceeded expectations.
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5 of 5 Blockchain reviews are 5 stars

2 new reviews for Blockchain in past 6 months

$50,000 – $199,999 avg. project cost

Blockchain PROJECT HIGHLIGHT

Blockchain Development for FinTech Company
5.0 — RedDuck developed a DeFi platform for a financial technology company. The team built the client's smart contracts, backend infrastructure, frontend app, user dashboard, landing website, and a Read more
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More responsive than most other service providers

RedDuck is very responsive
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Germany (1) India (1) South Africa (1) Thailand (1) Ukraine (1) United States (1) England (1)

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Codiste

4.9 9 reviews

$10,000+

$25 - $49 / hr

50 - 249

Johannesburg, South Africa

Services provided

20% Blockchain

20% AI Consulting

20% Generative AI +4 services

10% AI Development

10% AR/VR Development

10% Event Management

10% Low/No Code Development

Codiste - A Blockchain and AI Development Company specializes in Blockchain Development, Smart Contract Development, and Decentralized Application (DApp) Development. Reviewers consistently highlight their exceptional project management, responsiveness, and ability to meet deadlines. Clients praise the team's expertise and the flawless execution of projects, particularly in the realm of NFT collections and blockchain technology.

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Average Project Cost Breakdown

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

What Clients Have Said
Clients consistently praise Codiste for their cost-effectiveness and value for money. One CEO noted their financial understanding within the startup ecosystem, while another highlighted that the project was delivered on time and on budget, allowing for additional features without difficulty. Overall, the sentiment is positive, with clients appreciating the high-quality work delivered for a reasonable investment, often citing the team's commitment to exceeding expectations.
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More responsive than most other service providers

Codiste 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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Johannesburg, South Africa

1 Galway Road
Johannesburg, South Africa 2122
10 - 15

+27 60 976 6525

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Review Rating from Clients

4.8/5.0

Quality

5.0

Schedule

5.0

Cost

4.8

Willing to Refer

5.0

Johannesburg clients commend Codiste for their versatile development skills across health, music, and AI projects. They excel in project management, problem-solving, and timely delivery, providing tailored solutions with a dedicated team that adapts to evolving project needs.
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KB Consulting

5.0 1 review

Undisclosed

< $25 / hr

50 - 249

Sandton, South Africa

Services provided

12% Blockchain

16% Custom Software Development

12% Application Testing +5 services

12% E-Commerce Development

12% Enterprise App Modernization

12% Mobile App Development

12% Other Application Development

12% Web Development

KB Consulting is a bespoke web application development company specializing in advanced systems with Business Intelligence reporting. They received 100% positive feedback for their efficient project management and remarkable turnaround time, with clients highlighting cost-effectiveness as a significant benefit. All reviewers indicated satisfaction with no areas for improvement mentioned.

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Industry Experience

KB Consulting has received positive feedback primarily within the Advertising & Marketing industry. Clients have highlighted their expertise in bespoke web application development and Business Intelligence reporting integration. Their strengths include effective project management with a focus on timely delivery and cost efficiency. Overall sentiment reflects satisfaction with their collaborative approach and the successful implementation of systems that cater to diverse user bases, making them a strong fit for companies seeking innovative tech solutions in this sector.
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Advertising & marketing

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Average Project Cost Breakdown

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

What Clients Have Said
Clients have noted that KB Consulting offers significant value for money, with one Operations Manager highlighting the 'huge benefit' of their cost structure. The company's efficient turnaround time further enhances their appeal, making them a favorable choice for bespoke development projects. Overall, the sentiment regarding pricing and value is positive, indicating that clients feel they receive quality service relative to the financial investment.
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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

Johannesburg-based clients praise KB Consulting for their expertise in bespoke Laravel web applications and Business Intelligence integration. They delivered a complex knowledge base system supporting over 50 users, with impressive turnaround times and cost efficiency, demonstrating strong project management and technical skills.
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Tech Alchemy

5.0 33 reviews
Premier Verified

$25,000+

$25 - $49 / hr

50 - 249

Serves Johannesburg, South Africa

Services provided

40% Blockchain

20% Mobile App Development

20% Web Development +2 services

10% Custom Software Development

10% IT Strategy Consulting

Tech Alchemy is a Blockchain Development company specializing in smart contract development, decentralized application (DApp) development, and blockchain solutions. Client reviews reveal a 100% satisfaction rate, emphasizing their excellent project management, responsiveness, and partnership-driven approach. Notably, 80% of reviewers highlighted Tech Alchemy's expertise and creativity, which contributed to successful project outcomes and innovative solutions in blockchain technology.

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Reviews mention Easy to work with
Clients consistently commend Tech Alchemy for being exceptionally easy to work with. One client noted their availability and the absence of technical jargon, facilitating seamless communication. Another highlighted the friendly and supportive atmosphere, fostering creativity and collaboration. Overall, the sentiment is overwhelmingly positive, with clients appreciating the team's approachability, responsiveness, and genuine interest in their projects, which enhances the working relationship.

App Development for Digital Coach

5.0 Apr 12, 2021

They are personable, young, and easy to work with.
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Website Redesign for Management Software Company

5.0 Sep 29, 2020

We communicated through email and if there was ever a misunderstanding they were willing to hop on a call almost immediately to sort through and come to an understanding so they could continue to crush out the development. I really love how personal and open to communicating everyone is there. It makes for a very easy and seamless transition into upgrading our entire site.
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Custom Software Development for Blockchain Ticketing Company

5.0 Oct 4, 2023

Easy to work with: I have worked with other devs and teams, but TA is always available and I don't have to speak technical jargon to get the point across. Love the London office, I often pop in when I am in that neck of the woods and the energy is great there, keep it up!
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Industry Experience

Tech Alchemy has received positive feedback across various industries, showcasing their expertise in Financial Services, Arts, Gaming, Software, and Healthcare. Clients commend their innovative approach, timely delivery, and strong communication. In Financial Services, they excelled in app development for fintech solutions. In Arts and Gaming, their blockchain capabilities were highlighted, enhancing user engagement. Notably, their work in Healthcare and IT Services revealed their adaptability and commitment to client success. Overall, their strengths in technical knowledge and project management make them a suitable partner across diverse sectors.
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Non-profit Financial services Gaming Software Sports Media Other Industry Government IT Services Healthcare Hospitality & leisure Advertising & marketing Business services Consumer Products Arts, entertainment & music

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Average Project Cost Breakdown

$10,000 to $49,000 (12) $50,000 to $199,999 (8) $200,000 to $999,999 (2) Less than $10,000 (1)

What Clients Have Said
Tech Alchemy is widely regarded for delivering strong value for money, with many clients praising their competitive pricing. A CEO noted that Tech Alchemy's pricing fit their budget while maintaining high quality, and a COO highlighted the company's ability to provide exceptional service without exceeding initial budgets. Overall, clients expressed satisfaction with the cost-effectiveness of their projects, often remarking on the impressive outcomes relative to their investment.
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More responsive than most other service providers

Tech Alchemy 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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Appstrax Technology

5.0 2 reviews

$10,000+

$50 - $99 / hr

10 - 49

Sandton, South Africa

Services provided

10% Blockchain

30% Custom Software Development

20% Mobile App Development +3 services

20% Web Development

10% Enterprise App Modernization

10% IoT Development

Appstrax Technology is a software development company that specializes in building end-to-end web and mobile applications. Their clients consistently praise their professionalism and capacity to understand business visions, with 100% of reviews highlighting their flexibility and solid backend capabilities. While there are minor areas for improvement, such as clearer timeline expectations, they are highly regarded for their seamless project management and customer-focused approach.

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Reviews mention Professional
Appstrax Technology has received positive feedback regarding their professionalism, with clients noting their commitment to understanding business needs and delivering tailored solutions. One client highlighted their impressive ability to create a seamless platform that aligns with the company's vision. However, there was a suggestion for improvement in clearly communicating project timelines. Overall, the sentiment reflects a strong appreciation for Appstrax's professional approach and effective project management.

Website Dev for Digital Inspiration Portal

5.0 Jul 7, 2020

Their professionalism and the fact that they care to understand our business and vision and find a seamless way to deliver that in a platform.
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Industry Experience

Appstrax Technology has garnered positive feedback across diverse industries, notably in Education and IT Services. In Education, clients highlighted their professionalism and ability to create impactful digital platforms, enhancing engagement and operational efficiency. In IT Services, their expertise in mobile app development, particularly for startups, was praised for flexibility and backend reliability, making them suitable for tech-driven projects. Overall, Appstrax is well-regarded for understanding client visions and delivering tailored solutions, making them a strong candidate for educational and technology-focused initiatives.
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Education IT Services

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Average Project Cost Breakdown

$10,000 to $49,000 (2)

What Clients Have Said
Appstrax Technology has received positive feedback regarding their cost-effectiveness and overall value. Clients noted that the investment, such as the approximately $30,000 spent for a mobile app, yielded satisfactory results and met project goals. One client emphasized the flexibility and professionalism of the team, stating that they delivered a product that exceeded expectations. However, there were mentions of needing clearer timelines at the outset, indicating potential areas for improvement in communication regarding costs and project duration.
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DIGITECH AFRICA LTD

Not yet reviewed

$10,000+

$25 - $49 / hr

10 - 49

Sandton, South Africa

Services provided

10% Blockchain

20% ERP Consulting and SI

15% BI & Big Data Consulting & SI +4 services

15% IT Strategy Consulting

15% Mobile App Development

15% Web Development

10% AI Development

Small ERP consulting and SI company DIGITECH AFRICA LTD, is located in Victoria, Seychelles and Abidjan, Côte d'Ivoire. Their services include ERP consulting and SI and BI & big data consulting &
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Sandton, South Africa

Michelangelo Towers, Sandton , JHB, Gauteng
Sandton, South Africa 2146
2 - 5

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Exelia Technologies

Not yet reviewed

$5,000+

$50 - $99 / hr

10 - 49

Johannesburg, South Africa

Services provided

10% Blockchain

20% AI Development

20% E-Commerce Development +4 services

20% Mobile App Development

16% Application Testing

10% Web Design

4% IoT Development

Exelia Technologies is a small application development firm. They specialize in Mobile App Development and E-Commerce Development and were established in 2013.
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Johannesburg, South Africa

3 Oakmont Close, The Glades
Johannesburg, South Africa 2055
2 - 5

0027(0)82907629

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Atlegang Digital Assets

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

Midrand, South Africa

Services provided

40% Blockchain

30% Blockchain Marketing

30% Digital Asset Management

Atlegang Digital Assets is a Blockchain company established in 2020. The team provides Blockchain and Blockchain Marketing.
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DevExec

Not yet reviewed

$1,000+

$100 - $149 / hr

2 - 9

Benoni, South Africa

Services provided

10% Blockchain

15% BI & Big Data Consulting & SI

15% Cloud Consulting & SI +6 services

10% AI Development

10% Custom Software Development

10% Cybersecurity

10% IoT Development

10% UX/UI Design

10% Web Design

DevExec is a big data analytics company in Benoni, South Africa. They focus on BI & big data consulting & SI and cloud consulting & SI and were established in 2004.
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Mobiloitte

4.5 20 reviews

$1,000+

$25 - $49 / hr

250 - 999

Centurion, South Africa

Services provided

10% Blockchain

35% AI Development

15% Mobile App Development +4 services

10% DevOps Managed Services

10% IoT Development

10% Search Engine Optimization

10% Web Development

Mobiloitte is a technology company specializing in Blockchain Development, AI integration, and mobile app creation. Across reviews, 100% of clients expressed satisfaction, highlighting their innovative Blockchain Solutions and excellent project management. Approximately 40% noted the need for improved initial communication, but Mobiloitte's tailored approach and timely delivery were consistently praised.

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Reviews mention Great project management
The feedback regarding Mobiloitte's project management highlights their highly structured and efficient approach. Clients praised Project Manager Arvind for his proactive communication, timely delivery of milestones, and adept problem-solving skills. One client noted that Mobiloitte maintained clear updates and promptly addressed concerns, ensuring smooth coordination throughout the project. This level of responsiveness and commitment to quality contributed significantly to the project’s success, solidifying Mobiloitte as a dependable technology partner.

Custom Mobile App Dev & Design for Financial Services Firm

5.0 Feb 28, 2025

Mobiloitte’s project management was highly structured and efficient, ensuring that every phase of the Taplend development process was executed smoothly. A key contributor to this success was Arvind, the Project Manager, who played a crucial role in overseeing the project from inception to completion. His ability to coordinate between teams, manage timelines, and address challenges proactively made a significant impact on the overall execution. Arvind maintained clear and consistent communication, regularly updating us on progress and promptly addressing any concerns or additional feature requests.
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Average Project Cost Breakdown

$10,000 to $49,000 (3) Less than $10,000 (2) $200,000 to $999,999 (1)

What Clients Have Said
Overall, client feedback regarding Mobiloitte's cost and value for money is mixed. While some clients noted that their pricing fit within budget and offered good value, others expressed dissatisfaction with the overall quality relative to the costs incurred. For instance, one client appreciated Mobiloitte's pricing alignment with their budget and highlighted the good value for the cost. Conversely, another client remarked that although Mobiloitte was not the cheapest option, they faced issues with project management and deliverables, leading to a negative perception of value.
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India (3) Canada (1) Ireland (1) United States (1)

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$4,000 Startup Small Business-Starter $100,000 Medium Size Business- Growth $150,000 Enterprises Large Business -Enterprise

Custom Blockchain Development Services
Mobiloitte provides a wide range of blockchain solutions, including AI-powered blockchain, public and private blockchain development, hybrid blockchain solutions, decentralized finance (DeFi) platforms, NFT marketplaces, crypto exchange development, and decentralized applications (DApps). We also specialize in tokenization, smart contract audit.
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InfyStrat Software Services

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Johannesburg, South Africa

Services provided

10% Blockchain

20% AI Development

20% IoT Development +4 services

20% Robotics Process Automation

10% BI & Big Data Consulting & SI

10% Cybersecurity

10% DevOps Managed Services

InfyStrat Software Services is an IoT development company. The Santa Clarita, California-based agency was established in 2015. Their services include IoT development and Artificial Intelligence.
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Johannesburg, South Africa

14, Eglin Road, Sunninghill, Sandton
Johannesburg, South Africa 2191
31 - 40

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Mothore Foundry

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Johannesburg, South Africa

Services provided

100% Blockchain

Mothore Foundry is a Blockchain company in Denver, Colorado and Johannesburg, South Africa. They provide Blockchain.
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Johannesburg, South Africa

16 Main RdMelville,
Johannesburg, South Africa 2109

+1 (720) 778-1089

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Top Blockchain Companies & Developers in Johannesburg

List of the Top Johannesburg Blockchain Development Companies

Reviews mention Personable

iOS Mobile App Development for Music Software Company

Reviewed 1 time in the past 6 months

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Flexible

Business Dev Consultancy for Construction Services Startup

EIP-20 Ethereum Token for Web3 Solution Provider

Software Development for Interim CFO Company

API Development for Banking Company

Blockchain Platform Dev for Real Estate Investment Platform

Industry Experience

Select Industry to see insights

Nextrope is very responsive

Reviews mention Exceeds expectations

Blockchain Development for FinTech Company

Blockchain Development for FinTech Company

RedDuck is very responsive

Average Project Cost Breakdown

What Clients Have Said

Codiste is very responsive

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Easy to work with

App Development for Digital Coach

Website Redesign for Management Software Company

Custom Software Development for Blockchain Ticketing Company

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Tech Alchemy is very responsive

Reviews mention Professional

Website Dev for Digital Inspiration Portal

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Great project management

Custom Mobile App Dev & Design for Financial Services Firm

Average Project Cost Breakdown

What Clients Have Said

Custom Blockchain Development Services

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List of the Top 3 Johannesburg Blockchain Development Companies

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