đź“… FREE CONSULTATION - START WITH THE PROBLEM, NOT THE TECHNOLOGY
Before any development starts, let’s talk about what you’re actually trying to solve or build. We offer a free 30 minute consultation with our team - no obligation and no sales pitch.
DevsX is a Ukrainian custom software development company helping startups and established businesses solve software challenges - from MVPs, web and mobile apps and SaaS to CRM/ERP systems, integrations, legacy modernization and app stabilization.
Since 2021, we’ve completed 100+ software projects, from enterprise platforms to new products and improvements to existing software.
🎯 WHERE PROJECTS USUALLY START
đź’ˇ You have an idea, but no clear path to launch
We define the right MVP scope, architecture and technology, then build what your users actually need to validate the product faster.
đź”§ Your existing application has become a problem
Recurring bugs, outdated architecture, and slow releases make every change expensive. We audit, stabilize and modernize your application before extending it.
🚀 Your business has outgrown standard software
We build custom CRM/ERP systems, SaaS platforms, web and mobile applications around your workflows, helping automate manual processes and connect your business systems.
🤖 You want AI to solve a real problem
We integrate AI and LLMs for automation, intelligent search, document processing, analytics and other use cases where they create measurable value.
🔄 Your legacy system needs modernization
Instead of rebuilding everything, we modernize what matters through refactoring, API modernization, cloud migration or gradual rebuilds.
⚙️ WHAT WE DO
Custom software development · MVP development · Web & mobile apps · SaaS development · CRM & ERP systems · API integrations · AI & LLM development · Legacy modernization · Cloud & DevOps · UI/UX · QA
We start with the problem, choose the right solution, and build software that supports your business.
📞 Have a product idea or software problem? Let’s talk.
DevsX offers good value for cost, with project investments typically between $10,000 and $49,999. Clients appreciate their pricing fitting budgets and their ability to deliver quality work on time, with strong project management and responsive communication.
DevsX is recognized for their expertise in integrating AI technologies, such as ChatGPT, into existing systems, leading to enhanced user engagement and reduced support costs.
Custom Approach to Client Needs
The company is recognized for their ability to tailor solutions to fit specific client needs. Their flexibility and willingness to adapt to client requirements stand out, especially for startups with unique demands.
Alignment with Client Values
Clients choose DevsX for their alignment of values, culture fit, and good value for cost. This alignment fosters a strong partnership and enhances collaboration.
Proficient in Mobile App Development
Clients commend DevsX's expertise in mobile app development across various platforms such as iOS, Android, and Xamarin. They have successfully delivered apps with complex functionalities, meeting clients’ specifications and enhancing user experience.
Areas for Improvement in Communication
While communication is generally praised, one client noted the need for better advance notification when developers are unavailable, suggesting room for improvement in proactive communication.
Positive Feedback on Cost-Effectiveness
DevsX is frequently chosen for their cost-effective services, providing high-quality deliverables at a competitive price, which clients find valuable.
Mobile App & Web Design & Dev for Consumer Products Co
Mobile App DevelopmentWeb DesignWeb Development
Consumer Mobile App DevelopmentTravel & Lifestyle Mobile App Development
$10,000 to $49,999
Mar. 2025 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"DevsX's commitment to excellence, as evidenced in their work, is impressive."
Dec 21, 2025
CEO, iline Pty ltd
John Barber
Verified
Other industries
Perth, Australia
1-10 Employees
Online Review
Verified
DevsX has designed and developed a mobile app for a consumer products company. The team has also completed the website design and is working on the remaining tasks to build the site.
DevsX has delivered the mobile app according to the client's specifications. The team has also created a design language for the client's online identity and delivered the website requirements to date. All the client's stakeholders are very satisfied with DevsX's work. The team delivers on time.
BACKGROUND
Introduce your business and what you do there.
I’m the CEO of a consumer products company. We’ve created a pilot safety device for motorcycle helmets.
OPPORTUNITY / CHALLENGE
What challenge were you trying to address with DevsX?
We needed to create a mobile phone navigation app integrated with a BLE wearable device. We also needed a website with an integrated sales platform, including SEO optimization, social media, and analytics.
SOLUTION
What was the scope of their involvement?
DevsX has designed and developed our mobile app. The team has also completed the website design and is working on the remaining tasks.
What is the team composition?
We’ve worked with 6-10 teammates from DevsX.
How did you come to work with DevsX?
We found DevsX on Upwork. We chose them because they had high ratings, their pricing fit our budget, they were a great culture fit, they offered good value for the cost, and their company values aligned with ours.
How much have you invested with them?
We’ve spent $10,000 to $49,999.
What is the status of this engagement?
We started working with DevsX in January 2023, and our engagement is ongoing.
RESULTS & FEEDBACK
What evidence can you share that demonstrates the impact of the engagement?
DevsX has delivered the mobile app according to our specifications. The team has also created a design language for our online identity and delivered the website requirements to date. All our stakeholders are very satisfied with DevsX’s work.
How did DevsX perform from a project management standpoint?
DevsX’s project management has been excellent. The team is always punctual. We communicate with them through in-person meetings, virtual meetings, and emails.
What did you find most impressive about them?
DevsX’s commitment to excellence, as evidenced in their work, is impressive.
Are there any areas they could improve?
I don’t think there’s anything they can improve on.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
E-Commerce Web Dev & Design for Sustainable Chocolate Brand
E-Commerce DevelopmentWeb DesignWeb Development
$10,000 to $49,999
Nov. 2024 - Mar. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"They sat and really listened and integrated our feedback directly into their work."
Mar 17, 2025
Co-Founder & CMO, nucao
Christian Fenner
Verified
Retail
Leipzig, Germany
11-50 Employees
Online Review
Verified
DevsX developed an e-commerce website for a sustainable chocolate brand. The team implemented a responsive design and integrated various features, such as a secure payment gateway and an inventory system.
After launching the new site, the client saw a significant increase in sales and customer engagement. They also saw a drop in bounce rates, indicating an increase in time spent on the site. DevsX managed the project well — they met all deadlines and were quick to respond to queries and requests.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Co-founder & CMO of nucao
Describe what your company does in a single sentence.
We're nucao, and we want to turn the chocolate industry on its head. Why? Because the environment and cocoa farmers are currently suffering massively from our chocolate consumption—that has to change! Founded in 2016 by three industrial engineers, we're committed to delicious and sustainable chocolate.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire DevsX to accomplish?
When we decided to bolster our online retail presence, our top priorities were making a really user friendly e shop and improving inventory management. We needed a landing page that did more than just show our products, but also delivered an easy shopping experience. Our site currently showed things in a tired and hard way to navigate. This has unfortunately made recruiting and retaining shoppers online more difficult. We enlisted help of DevsX for building a fresh and responsive site that helps us drive sales further and help us stand clearer in the digital market.
SOLUTION
How did you find DevsX?
Online Search
Clutch Site
Why did you select DevsX over others?
Good value for cost
Company values aligned
How many teammates from DevsX were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
The project included developing something strong and robust, a whole big platform for e-commerce and integrating great inventory management. We also designed something inviting for shoppers and made an area for them to securely log in and having pretty platforms worked on mobile. Plus key features such as safe and secure payment as well as a personalized tab that guarantees smooth service delivery to quickly growing cell phone buyers.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Our collaboration with DevsX has produced really impressive results. Within just weeks of kicking off this new fresher website we saw a big jump in sales and much more customer engagement. We saw a sharp drop in the number of bounces and as customers browsed deeper into product offerings they spent considerably longer time as well. Because of this user friendly design, repeat customers find it easy to navigate the previous orders and latest promotions and thus consistently purchase from us.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
DevsX has really shined big time on our partnership by doing excellent project management. When we set milestones and time lines we agreed, they met these without fail and kept everything very clear. Communication was always smooth and open as a very natural part of the process. When we had questions or needed to make changes, they were very quick and skilled and they made sure what we were most needing came first and foremost. Understanding the details of the project allowed me and the staff to focus on our own business without constant worry about delays coming in and messing everything up.
What was your primary form of communication with DevsX?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
They sat and really listened and integrated our feedback directly into their work, showing an ironclad commitment to having a solution which is indivisible from their brand and values.
Are there any areas for improvement or something DevsX could have done differently?
Nothing.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Web & Custom Software Development for Real Estate Media Co
Custom Software DevelopmentWeb Development
Amazon Application Development Framework.NET
$50,000 to $199,999
Aug. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"If you can provide DevsX with clear direction, they can give you what you want."
Dec 30, 2024
Owner, Real Estate Media Hero
Jonathan Corbett
Verified
Other industries
Greensboro, North Carolina
1-10 Employees
Online Review
Verified
DevsX has developed a custom software solution for a real estate media company. The team has been tasked with transforming Figma designs into a functional, launchable product.
Thanks to DevsX's efforts, the client has been able to compete against companies that have invested millions of dollars into their software and business. The team has a good project management approach and communicates clearly through virtual meetings. DevsX has delivered what the client asked for.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Owner of Real Estate Media Hero
Describe what your company does in a single sentence.
We help professionals take orders and schedule appointments.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire DevsX to accomplish?
Build a software ready for launch in 3 months.
Maintain the software long term.
SOLUTION
How did you find DevsX?
Online Search
Why did you select DevsX over others?
High ratings
Great culture fit
Good value for cost
Company values aligned
How many teammates from DevsX were assigned to this project?
6-10 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
DevsX helped me, a non technical founder, build a custom software from a Figma to a fully functional, launchable product in around 3 months. The team was great to work with and was able to complete an incredible amount of work in a short time at a very high quality.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
We were able to go into competition against companies that have invested millions of dollars into their software and business and win.
If you can provide DevsX with clear direction, they can give you what you want. You are the only limit.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Their project management is very good. They have at least 2 team members working with you and the dev team to make sure everything is being communicated clearly. Most everything was delivered as I asked.
What was your primary form of communication with DevsX?
Virtual Meeting
What did you find most impressive or unique about this company?
I was very happy that we did not have to do things over several times before we got it right. I provided what I wanted very clearly and I got exactly what I asked for.
If there was ever a mistake, it was because I was not clear enough in my instructions.
Are there any areas for improvement or something DevsX could have done differently?
Some of the timelines were not hit at the beginning and the middle of the project, but the final deadline was done on time.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Mobile & SaaS Web App Development for Financial Services Co
Custom Software DevelopmentMobile App DevelopmentWeb Development
.NETFinancial Mobile App DevelopmentConsumer Mobile App Development
Confidential
Nov. 2022 - Apr. 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"The team was very supportive and offered better ideas than we had in mind, which made the product even better."
Dec 22, 2024
Former CEO, Crediture, Inc.
John Kanalakis
Verified
Financial services
Campbell, California
1-10 Employees
Online Review
Verified
DevsX developed a SaaS web app and a .NET mobile app for a financial services company. The team integrated workflow management, rule builder, and data collection systems into the web app.
DevsX delivered high-quality work on time and within budget. The team was responsive, supportive, and accommodating to changes, communicating primarily via virtual meetings, emails, and messaging apps. Their quickness, talent, and professionalism were impressive, resulting in a positive engagement.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the former CEO of Crediture, Inc.
Describe what your company does in a single sentence.
Crediture evaluated small business credit risk for lenders by evaluating banking transactions.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire DevsX to accomplish?
Develop a SaaS lending portal
Develop a mobile application
Integrate a workflow management into the SaaS portal
SOLUTION
How did you find DevsX?
Online Search
Why did you select DevsX over others?
High ratings
Pricing fit our budget
Great culture fit
Good value for cost
Company values aligned
How many teammates from DevsX were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
The scope of work included the following:
Undertanding the core business and application requirements
Refine the data model to support the core requirementes
Implement a .NET mobile application for consumer interaction
Implement a SaaS web application for lender interaction
Add specialized features to the SaaS web application, such as:
Workflow management with drag & drop object editing
Workflow rule builder and runtime rule-based execution
Dynamic application form building with drag & drop UI form elements
Dynamic data collection from dynamic forms
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
The project was delivered on time and on budget
Describe their project management. Did they deliver items on time? How did they respond to your needs?
The team was very responsive around key ilestone dates, such as customer demos and sales meetings. The team was very supportive and offered better ideas than we had in mind, which made the product even better.
What was your primary form of communication with DevsX?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
I was most impressed with how fast the team was able to implement our needs with a high degree of quality. The team was very talented, professional, and accommodating to changes. Even though the project took unexpected turns on our side, the team was always able to accommodate those changes.
Are there any areas for improvement or something DevsX could have done differently?
I haev no suggestions for improvement as the team implemented our project flawlessly.
RATINGS
5.0
"Very good experience with every requirement met, on time, and with excellent communication."
Quality
5.0
Service & Deliverables
"High-quality code that was well-documented and had very few bugs."
Schedule
5.0
On time / deadlines
"The team was able to make commitments to weekly development sprints."
Cost
5.0
Value / within estimates
"The team was a great value given the size and experience of the team for the price."
Willing to Refer
5.0
NPS
"I will certainly return to this team for my next project.
Mobile App Dev for Agritech Company
Mobile App Development
Flutter
Confidential
Apr. - Aug. 2024
5.0
Quality
4.5
Schedule
3.5
Cost
4.0
Willing to Refer
5.0
"The communication from my DevsX contact was very good."
Aug 12, 2024
CTO, Agtech Startup
Ivan W
Verified
Other industries
Ireland
1-10 Employees
Online Review
Verified
DevsX has developed a mobile app for iOS and Android for an agritech company. The app includes authentication, CRUD functionality, and a Bluetooth connection with a custom Bluetooth API.
The app's functionalities have helped accelerate the development process. DevsX is very responsive to the client's needs, manages the project, and communicates well.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the CTO of Agtech Startup
Describe what your company does in a single sentence.
We make decision support tools for beef farmers
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire DevsX to accomplish?
Create a Flutter Mobile App for Apple and Android
SOLUTION
How did you find DevsX?
Online Search
Why did you select DevsX over others?
Seemed like best option
How many teammates from DevsX were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Develop a mobile app with authentication, that has CRUD functionality for users and visually displays data in graphs and visuals. The app can also connect to a proprietary device via bluetooth. Once connected to the device, the app can communicate bi-directionally with the external device.
Key Deliverables: - Flutter App for iOs and Android - Authication using AWS - CRUD functionality with database - Data visualisation - Bluetooth Connection with custom Bluetooth API
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
The functionality of the app demonstarted the progress of the development.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
The project manager was very good, the response times to queries and questions was very professional. Overall the project was managed very well.
What was your primary form of communication with DevsX?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
The communication from my DevsX contact was very good, and response times were very short when I had queries.
Are there any areas for improvement or something DevsX could have done differently?
I think there were some days when the developer assigned to my project was unavailable, and I was not aware of this. This could have been communicated to me in advance.
RATINGS
5.0
Quality
4.5
Service & Deliverables
Schedule
3.5
On time / deadlines
Cost
4.0
Value / within estimates
Willing to Refer
5.0
NPS
Chatbot UI/UX Design & Dev for Healthcare SaaS Solutions Co
AI Development
Chatbots & Conversational AIMachine LearningNatural Language Processing
$10,000 to $49,999
Mar. - May 2023
4.5
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"We had a top-notch experience overall."
May 13, 2023
Co-Founder, BuildApps
Vadym Rybalko
Verified
Other industries
Kyiv, Ukraine
11-50 Employees
Online Review
Verified
A SaaS solutions company hired DevsX to integrate ChatGPT into their existing models. The team provided UI/UX design, developed a chatbot, fine-tuned it using APIs, tested it, and performed QA tasks.
DevsX's work achieved 65% user engagement growth, an 80% reduced response time for user queries, and a 90% automation of responses, decreasing support costs by 30%. The team met all deadlines and was responsive to the client's needs, achieving good project management. Their expertise also stood outÂ
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Cofounder of BuildApps
Describe what your company does in a single sentence.
We develop SAAS solutions.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire DevsX to accomplish?
Integrate ChatGPT into our current platform.Â
Train GPT models.
SOLUTION
How did you find DevsX?
Referral
Why did you select DevsX over others?
High ratings
Pricing fit our budget
Great culture fit
Good value for cost
Referred to me
Company values aligned
How many teammates from DevsX were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Project Discovery and Requirements Gathering:Â
a) Conducted in-depth discussions to understand the vision and objectives of the healthcare appÂ
b) Identified key requirements for the chatbot, including target audience, core functionalities, and integration pointsÂ
c) Established a detailed project timeline and milestonesÂ
Chatbot Design and Architecture:Â
a) Developed a high-level design for the chatbot, including user interface (UI) and user experience (UX) componentsÂ
b) Designed the chatbot architecture based on the GPT model, incorporating necessary customizations for the healthcare industryÂ
c) Created a comprehensive list of intents, entities, and dialog flows to support a wide range of user queriesÂ
Model Tuning and API Integration:Â
a) Fine-tuned the GPT model using API to optimize the chatbot's performance, ensuring accurate, contextually relevant responsesÂ
b) Integrated the chatbot with existing app infrastructure and APIs, including Electronic Health Records (EHR) and appointment scheduling systems User Interface (UI) and User Experience (UX)Â
Development:Â
a) Designed and implemented a visually appealing and user-friendly chatbot interface, ensuring seamless integration with the existing app designÂ
b) Conducted iterative UX testing and refinements to optimize the user experience and chatbot interactionÂ
Testing and Quality Assurance:Â
a) Performed rigorous testing of the chatbot, including functional, performance, and security testingÂ
b) Addressed any bugs or issues identified during the testing phase, ensuring a high-quality final productÂ
Deployment and Launch:Â
a) Deployed the chatbot to the live healthcare app environment, ensuring a smooth transition for usersÂ
b) Monitored the chatbot's performance and user interactions post-launch, making any necessary adjustments for optimal performanceÂ
Post-Launch Support and Maintenance:Â
a) Provided ongoing support and maintenance for the chatbot, including updates to the GPT model, bug fixes, and new feature additionsÂ
b) Conducted regular performance evaluations and user feedback sessions to identify areas for improvement and enhancement
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
User Engagement Growth: The chatbot contributed to a 65% increase in user engagement within the healthcare app, as users frequently interacted with the chatbot to seek advice and information.Â
Decreased Response Time: The implementation of the chatbot led to an 80% reduction in response time for user queries, providing instant access to healthcare information compared to the previous average wait time of 10 minutes using manual support channels.Â
Higher Query Resolution Rate: The fine-tuned GPT model allowed the chatbot to successfully address 90% of user queries without the need for human intervention, compared to a previous resolution rate of 65% using manual support.Â
Reduced Support Costs: The chatbot helped decrease support costs by 30%, as it reduced the reliance on human support staff and improved the overall efficiency of the support system.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
The vendor's project management was stellar. They nailed deadlines and were super responsive to our needs. We had a top-notch experience overall.
What was your primary form of communication with DevsX?
In-Person Meeting
Virtual Meeting
What did you find most impressive or unique about this company?
They have a few guys that have an extensive experience in tunning models. Vitalii is super smart and also understands not only tech needs but also a business needs.
Are there any areas for improvement or something DevsX could have done differently?
Nope. It was a great experience.
RATINGS
4.5
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Mobile App Dev for Agricultural Software & Consulting Firm
Mobile App Development
Field Operations Mobile App DevelopmentAndroid App DevelopmentiPhone iOS App DevelopmentHybrid & cross platform apps
$10,000 to $49,999
May - Sep. 2021
5.0
Quality
5.0
Schedule
4.5
Cost
5.0
Willing to Refer
5.0
"It was a good experience working with DevsX, as we were successful in creating the app we wanted."
Nov 2, 2022
Founder, Agricultural Software & Consulting Firm
Anonymous
Verified
Other industries
Germany
1-10 Employees
Phone Interview
Verified
DevsX was hired by an agricultural software and consulting firm for their Xamarin app development service. The team developed a GPS positioning app and made it compatible with the iOS and Android platforms.
Although the download count for customers is quite low, DevsX was still able to produce a fully-functional product, much to the customers' delight. The team was highly communicative, and internal stakeholders were particularly impressed with the vendor's technical knowledge and expertise.
A Clutch analyst personally interviewed this
client over the phone. Below is an edited
transcript.
BACKGROUND
Introduce your business and what you do there.
I'm the founder of dev4Agriculture, a software and consulting company focusing on data exchange and validation in the agricultural industry.
OPPORTUNITY / CHALLENGE
What challenge were you trying to address with DevsX?
We needed help in creating an app that could send and receive GPS positions. We wanted to develop a fleet management solution so that the driver of machines can see where other machines are.
SOLUTION
What was the scope of their involvement?
DevsX helped us specify our rough specification and identified iOS and Android as our main platforms. They also helped with the product's technical background, focusing on optimizing the OS. We mainly used Xamarin as our development tool while we accomplished the design on our side. Moreover, they provided the test deployment aspect aimed at a limited amount of customers.
What is the team composition?
Vitaliy (CEO & Founder) was our main point of contact.
How did you come to work with DevsX?
I found them on Upwork.
How much have you invested with them?
We invested round $10,000.
What is the status of this engagement?
We worked together from May–September 2021.
RESULTS & FEEDBACK
What evidence can you share that demonstrates the impact of the engagement?
It was a good experience working with DevsX, as we were successful in creating the app we wanted. However, the number of downloads is quite low because we're still looking for more customers.
Needless to say, we were able to fix several bugs during the development process and produced a reliable and quick app that makes our customers happy.
How did DevsX perform from a project management standpoint?
Staying in budget was absolutely okay. Communication was good. We did virtual calls on either Google or Teams, and whenever I had questions, they responded quite fast. We also used Slack for communication.
What did you find most impressive about them?
We were impressed with their experience and knowledge of iOS and Android.
Are there any areas they could improve?
No, as I was quite happy with their work.
Any advice for potential customers?
I would advise you to finalize the specification of your project and listen to them when it comes to iOS and Android development.
RATINGS
5.0
"5"
Quality
5.0
Service & Deliverables
"5"
Schedule
4.5
On time / deadlines
"4.5"
Cost
5.0
Value / within estimates
"5"
Willing to Refer
5.0
NPS
"5
Mobile App Development for Business Intelligence Company
Mobile App Development
$10,000 to $49,999
Oct. 2017 - Feb. 2019
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"They started with the abstract ideas in my head and then shaped them into reality."
Jul 21, 2021
CEO, Script Solution
Andrii Slyva
Verified
Retail
Lutsk, Ukraine
11-50 Employees
Online Review
Verified
A business intelligence company hired DevsX to develop a loyalty program app. After a discovery and planning phase, the team worked with the client to design, develop, and test the app.
The app raised customer satisfaction and exceeded the client's expectations. DevsX's extensive experience allowed them to transform the client's ideas into a functional and well-performing product. A reliable partner, they provided regular updates and finished the project before the deadline.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I'm the CEO of a Business Intelligence service for small retail stores called Script Solution
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire DevsX, and what were your goals?
We wanted a mobile Xamarin app that would: count goods control prices make inventory count monitor prices in the similar shops sales alerts push notifications online cards
SOLUTION
How did you select this vendor and what were the deciding factors?
It was more like a recommendation choice. These guys made an awesome app for one of our common friends, and I thought I wanted this one.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
We had a few meetings, where we discussed a vision of this app. Then we elaborated a plan. Then we made a design and moved via Scrum methodology. Every task in SCRUM was tested via QA testing.
How many resources from the vendor's team worked with you, and what were their positions?
We worked with 3 Xamarin developers, my communication was mostly via a lead Developer Vitaliy. We had daily meetings to report on progress
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
Hell yes, the app was an absolute killer feature. Clients literally bombarded us with appreciation words. Basically, the app added a missing link between the db and the live world. And all these scans, live updates, basically sort of middle link in interaction, even some kind of gamification increased customers satisfaction to the roof.
Describe their project management style, including communication tools and timeliness.
We worked with 3 Xamarin developers, my communication was mostly via a lead developer Vitaliy. We had daily meetings to report on progress. The app was finished before the deadlines.
What did you find most impressive or unique about this company?
These guys did the full cycle. They started with the abstract ideas in my head and then shaped them into reality. Then we developed a plan with clear steps, then they designed screens, and coded all the rest.
Are there any areas for improvement or something they could have done differently?
They are very focused on Xamarin development, and they didn't provide other stuff, like web backend that could be useful.
"They combine strong technical expertise with a very approachable and easygoing communication style."
Feb 27, 2026
CTO, MarketQuantic Inc.
Ronny Vandermeeren
Information technology
Sheridan, Wyoming
1-10 Employees
Online Review
DevsX provided software development for a software solutions company. The team solved certificate and signing issues, implemented an auto-update mechanism for macOS using .NET MAUI, and boosted business logic.
DevsX delivered a working certificate and auto-update feature in the trial version of the client's desktop app. The team was proactive, detail-oriented, and responsive. They went beyond expectations by suggesting improvements. Their technical expertise and personable approach were key to success.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the CTO of MarketQuantic Inc.
Describe what your company does in a single sentence.
Development of software solutions for retail traders
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire DevsX to accomplish?
.NET9 custom development
.NET MAUI expertise regarding Macatalyst
Solve certificate issues on our main desktop app
SOLUTION
How did you find DevsX?
Online Search
Why did you select DevsX over others?
Pricing fit our budget
Great culture fit
Good value for cost
Company values aligned
How many teammates from DevsX were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Resolved complex certificate and signing issues by implementing Azure Code Signing, ensuring secure and compliant application distribution.
Implemented an auto-update mechanism for macOS using .NET MAUI, improving release management and user experience.
Refined and optimized core business logic within the trading application to improve stability, accuracy, and overall performance.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
A working certificate and autoupdate feature in the trial version of our desktop app + extensive tests regarding business logic
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Their project management was excellent. The team was proactive, detail-oriented, and consistently stayed on top of tasks and milestones. They delivered items on time and maintained clear, transparent communication throughout the project.
Whenever we had questions or new requirements, they responded quickly and thoughtfully. They didn’t just execute tasks — they went beyond expectations by suggesting improvements and ensuring everything was implemented properly and thoroughly.
What was your primary form of communication with DevsX?
Virtual Meeting
What did you find most impressive or unique about this company?
What stood out most was how personable yet highly capable the team is. They combine strong technical expertise with a very approachable and easygoing communication style. It never felt like we were just another client — they genuinely cared about our product and success, while also having the skills and experience to confidently handle complex technical challenges.
Are there any areas for improvement or something DevsX could have done differently?
Nothing comes to mind that deserves explicit mention.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
4.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Web & Mobile App Development for Social Media Company
Mobile App DevelopmentWeb Development
Azure PlatformOther app platform.NET
$50,000 to $199,999
Jan. 2021 - Jan. 2023
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"I was impressed by DevsX's speed of development and breadth of experience in all aspects of the development process."
Jul 22, 2024
CTO, ListList
Tyler D
Verified
Other industries
Birmingham, Alabama
1-10 Employees
Online Review
Verified
DevsX developed web and mobile applications for a social media company. The team built and launched the client's app on the App Store and Google Play Store and then expanded the app into a web version.
DevsX's final product and development speed met the client's expectations. The team showcased an impressive breadth of experience in all aspects of the development process. DevsX delivered projects on time and on budget, using simple project management tools to aid in task management.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Chief Technology Officer of ListList
Describe what your company does in a single sentence.
Social media company built around creating, sharing and engaging with lists!
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire DevsX to accomplish?
Launch Mobile App
Launch Web Version
SOLUTION
How did you find DevsX?
Online Search
Why did you select DevsX over others?
Pricing fit our budget
Good value for cost
How many teammates from DevsX were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
DevX was able to build and launch a mobile application, ListList on the apple store and google play store. We then utilized their resources to expand our mobile applicaiton into a web verison.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Project delivery and code development speed were how we measured success of this engagement.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Yes - projects and deliverables were on time and on budget. We utilized simple project management tools to aid in task and project management.
Their team was super helpful in working with low-fi requirements and developing final solutions extremely quickly.
What was your primary form of communication with DevsX?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
I was impressed by DevsX's speed of development and breadth of experience in all aspects of the development process.
Are there any areas for improvement or something DevsX could have done differently?
Nothing that comes to mind.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Showing 1-10 of
13 Reviews
Packages we offer:
Custom Software Development
Need software built around a specific business process or product idea? We develop custom web, mobile, and business software from planning to launch. This includes architecture, UI, development, integrations, testing, and deployment, with the scope built around what your business actually needs at every stage.
Small
Custom MVP
Startups testing a product idea
$10,000
/total
Project Strategy and Roadmap
Product Discovery and Design
UI Design and Development
Core Functionality
Backend & APIs
Medium
Business Solution
Replacing or improving a process
$25,000
/total
Project Strategy and Roadmap
Product Discovery and Design
UI Design and Development
Core Functionality
Backend & APIs
Large
Full Product
Companies building a complete product
$50,000
/total
Project Strategy and Roadmap
Product Discovery and Design
UI Design and Development
Core Functionality
Backend & APIs
Features
Small
$10,000
/total
Medium
$25,000
/total
Large
$50,000
/total
Project Strategy and Roadmap
Product Discovery and Design
UI Design and Development
Core Functionality
Backend & APIs
Database
Third-party API Integrations
–
Authentication & User Roles
–
Admin Panel
–
Advanced workflows
–
–
Multiple User roles / Portals
–
–
QA & testing
Deployment
Post-Launch Support
Small
$10,000
/total
Project Strategy and Roadmap
Product Discovery and Design
UI Design and Development
Core Functionality
Backend & APIs
Database
Third-party API Integrations
–
Authentication & User Roles
–
Admin Panel
–
Advanced workflows
–
Multiple User roles / Portals
–
QA & testing
Deployment
Post-Launch Support
Medium
$25,000
/total
Project Strategy and Roadmap
Product Discovery and Design
UI Design and Development
Core Functionality
Backend & APIs
Database
Third-party API Integrations
Authentication & User Roles
Admin Panel
Advanced workflows
–
Multiple User roles / Portals
–
QA & testing
Deployment
Post-Launch Support
Large
$50,000
/total
Project Strategy and Roadmap
Product Discovery and Design
UI Design and Development
Core Functionality
Backend & APIs
Database
Third-party API Integrations
Authentication & User Roles
Admin Panel
Advanced workflows
Multiple User roles / Portals
QA & testing
Deployment
Post-Launch Support
Custom Web Development
Need a new website or web app built around your business goals? We develop scalable web solutions from frontend to backend, with responsive UI, APIs, integrations, and testing. Whether you’re launching a new product or improving an existing one, we’ll keep the build focused and practical, from setup to launch and support.
Small
Landing pages & small websites
$8,000
/total
Responsive frontend
UI implementation
Third-party integrations
Authentication & user roles
QA & deployment
Medium
Business websites & web apps
$15,000
/total
Responsive frontend
UI implementation
Backend / API
Database integration
Third-party integrations
Large
Complex web apps & SaaS
$30,000
/total
Responsive frontend
UI implementation
Backend / API
Database integration
Third-party integrations
Features
Small
$8,000
/total
Medium
$15,000
/total
Large
$30,000
/total
Responsive frontend
UI implementation
Backend / API
–
Database integration
–
Third-party integrations
Authentication & user roles
Advanced business logic
–
–
Admin dashboard
–
QA & deployment
Small
$8,000
/total
Responsive frontend
UI implementation
Backend / API
–
Database integration
–
Third-party integrations
Authentication & user roles
Advanced business logic
–
Admin dashboard
–
QA & deployment
Medium
$15,000
/total
Responsive frontend
UI implementation
Backend / API
Database integration
Third-party integrations
Authentication & user roles
Advanced business logic
–
Admin dashboard
QA & deployment
Large
$30,000
/total
Responsive frontend
UI implementation
Backend / API
Database integration
Third-party integrations
Authentication & user roles
Advanced business logic
Admin dashboard
QA & deployment
Mobile app MVP development - from idea to launch
Have a validated idea or roadmap but no working app yet? We build focused MVPs end to end, with the core features needed to test your idea with real users. This includes architecture, frontend/backend, integrations, testing and App Store/Google Play submission prep. If new features come up, we’ll help decide what stays in the MVP and what can wait.
Small
For startups and companies needing MVPs quickly
$5,000
/total
Cross-Platform App
Native App
Hybrid App
Payment Gateway integration
Social Media Integration
Medium
For startups and companies needing MVPs quickly
$5,000
/total
Cross-Platform App
Native App
Hybrid App
Payment Gateway integration
Social Media Integration
Large
For startups and companies needing MVPs quickly
$5,000
/total
Cross-Platform App
Native App
Hybrid App
Payment Gateway integration
Social Media Integration
Features
Small
$5,000
/total
Medium
$5,000
/total
Large
$5,000
/total
Cross-Platform App
Native App
Hybrid App
Payment Gateway integration
Social Media Integration
Product/Service Description Page
Push Notifications
Email Integration
Product Design (UX & UI)
Admin Panel
Testing
Support
Included
Included
Included
Small
$5,000
/total
Cross-Platform App
Native App
Hybrid App
Payment Gateway integration
Social Media Integration
Product/Service Description Page
Push Notifications
Email Integration
Product Design (UX & UI)
Admin Panel
Testing
Support
Included
Medium
$5,000
/total
Cross-Platform App
Native App
Hybrid App
Payment Gateway integration
Social Media Integration
Product/Service Description Page
Push Notifications
Email Integration
Product Design (UX & UI)
Admin Panel
Testing
Support
Included
Large
$5,000
/total
Cross-Platform App
Native App
Hybrid App
Payment Gateway integration
Social Media Integration
Product/Service Description Page
Push Notifications
Email Integration
Product Design (UX & UI)
Admin Panel
Testing
Support
Included
Bluetooth (BLE) & IoT device integration
BLE/IoT app losing connection, failing in background or struggling with real-world reliability?
We build stable device connectivity with reconnection logic, background handling, and iOS/Android permissions. We focus on reliable performance beyond controlled testing. Tell me your device and platform so we can confirm the right approach.
Small
BLE Connectivity Audit
$250
/total
Device & platform review
Connection issue analysis
Medium
BLE Connectivity Fix
$600
/total
Device & platform review
Connection issue analysis
Pairing & reconnection logic
Background connectivity
iOS/Android permissions
Large
BLE/IoT Integration
$1,000
/total
Device & platform review
Connection issue analysis
Pairing & reconnection logic
Background connectivity
iOS/Android permissions
Features
Small
$250
/total
Medium
$600
/total
Large
$1,000
/total
Device & platform review
Connection issue analysis
Pairing & reconnection logic
–
Background connectivity
–
iOS/Android permissions
–
BLE data communication
–
–
Error handling & edge cases
–
–
End-to-end device integration
–
–
Real-device testing
–
–
Small
$250
/total
Device & platform review
Connection issue analysis
Pairing & reconnection logic
–
Background connectivity
–
iOS/Android permissions
–
BLE data communication
–
Error handling & edge cases
–
End-to-end device integration
–
Real-device testing
–
Medium
$600
/total
Device & platform review
Connection issue analysis
Pairing & reconnection logic
Background connectivity
iOS/Android permissions
BLE data communication
–
Error handling & edge cases
–
End-to-end device integration
–
Real-device testing
–
Large
$1,000
/total
Device & platform review
Connection issue analysis
Pairing & reconnection logic
Background connectivity
iOS/Android permissions
BLE data communication
Error handling & edge cases
End-to-end device integration
Real-device testing
Application Management & Support
Need ongoing support for an existing web or mobile app? We handle bug fixes, updates, performance issues, integrations, and day-to-day maintenance. Whether you need occasional technical help or ongoing support, we keep your application stable, secure, and ready for new changes as your business grows.
Small
Basic Support
Occasional fixes and maintenance
$750
/month
Bug fixes
Technical troubleshooting
Minor updates
Medium
Ongoing Support
Regular maintenance and updates
$1,500
/month
Bug fixes
Technical troubleshooting
Minor updates
Performance monitoring
Security & dependency updates
Large
Full Management
Development + technical ownership
$2,500
/month
Bug fixes
Technical troubleshooting
Minor updates
Performance monitoring
Security & dependency updates
Features
Small
$750
/mo
Medium
$1,500
/mo
Large
$2,500
/mo
Bug fixes
Technical troubleshooting
Minor updates
Performance monitoring
–
Security & dependency updates
–
API & integration support
–
Feature updates
–
–
Proactive maintenance
–
–
Priority support
–
–
Ongoing technical planning
–
–
Small
$750
/mo
Bug fixes
Technical troubleshooting
Minor updates
Performance monitoring
–
Security & dependency updates
–
API & integration support
–
Feature updates
–
Proactive maintenance
–
Priority support
–
Ongoing technical planning
–
Medium
$1,500
/mo
Bug fixes
Technical troubleshooting
Minor updates
Performance monitoring
Security & dependency updates
API & integration support
Feature updates
–
Proactive maintenance
–
Priority support
–
Ongoing technical planning
–
Large
$2,500
/mo
Bug fixes
Technical troubleshooting
Minor updates
Performance monitoring
Security & dependency updates
API & integration support
Feature updates
Proactive maintenance
Priority support
Ongoing technical planning
Legacy web app/mobile app modernization
Is your app built on an outdated or hard-to-maintain codebase? We modernize mobile and web apps while preserving working business logic, integrations and key features. We assess the current system, plan the migration, rebuild where needed and test the result so you can extend the product faster. No unnecessary rebuilds, only what needs to change.
Small
Modernization audit
Tech review and a roadmap
$2,000
/total
Codebase assessment
Architecture review
Modernization roadmap
Medium
App modernization
Code and architecture updates
$5,000
/total
Codebase assessment
Architecture review
Modernization roadmap
Code refactoring
Architecture updates
Large
Full modernization
Legacy app rebuild or migration
$10,000
/total
Codebase assessment
Architecture review
Modernization roadmap
Code refactoring
Architecture updates
Features
Small
$2,000
/total
Medium
$5,000
/total
Large
$10,000
/total
Codebase assessment
Architecture review
Modernization roadmap
Code refactoring
–
Architecture updates
–
API & integration updates
–
Business logic migration
–
–
Feature parity
–
–
Legacy app rebuild
–
–
Platform / technology migration
–
–
Testing & deployment
–
–
Small
$2,000
/total
Codebase assessment
Architecture review
Modernization roadmap
Code refactoring
–
Architecture updates
–
API & integration updates
–
Business logic migration
–
Feature parity
–
Legacy app rebuild
–
Platform / technology migration
–
Testing & deployment
–
Medium
$5,000
/total
Codebase assessment
Architecture review
Modernization roadmap
Code refactoring
Architecture updates
API & integration updates
Business logic migration
–
Feature parity
–
Legacy app rebuild
–
Platform / technology migration
–
Testing & deployment
–
Large
$10,000
/total
Codebase assessment
Architecture review
Modernization roadmap
Code refactoring
Architecture updates
API & integration updates
Business logic migration
Feature parity
Legacy app rebuild
Platform / technology migration
Testing & deployment
Contact DevsX
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