Nikita Vershinin VP of Engineering at Ankorstore

5.0★

Software Development Review from Nikita Vershinin

We've partnered with Sigma Software for almost three years, and they proved to be a strong partner with whom we'll keep working. Their adaptability and willingness to get things done are unique, settingthem apart from other providers. Moreover, they demonstrate a strong sense of ownership.

Michael Meyer Managing director at trendwaerts GmbH

5.0★

Software Development Review from Michael Meyer

We were so positively surpised and happy about Sigmas services - as usual I might add. It is a pleasure working with their software engineers. After we provided a briefing, the effort estimation came right away. Shortly after the project started we could see first tangible results. The code quality was excellent and comprehensive. Minor feedback was implemented right away. What can I say more: 10 out of 10 points!

Esther Howard Founder / CEO at Bezyl

5.0★

Mobile App Development Review from Esther Howard

The client is incredibly happy with Sigma's services and work. It has referred 3 other clients who also say how much they really love the team and process to get set up with the agency. Sigma is a fantastic company with excellent experienced professionals. Its experts care about quality and customer satisfaction, and they operate like the internal team's extension. (Verified via email)

Anders P. CEO at Soldags

5.0★

Project Management Review from Anders P.

I can strongly recommend Alex to anyone looking for a web designer! It's been extremely easy to work with him, and his designs has had a very high quality. Alex is thorough, he really tries to understand the problem before starting designing, he delivers on his promises, has a short turn around time ... And one thing that I'm extra happy for is Alex's ability to think out of the box, adding that extra to his work that is so hard to ask for before you see it.

Travis Willman Founder at Council

5.0★

Project Management Review from Travis Willman

Alex has been a part of my team for almost 2 years. He is a great designer and an outstanding freelancer. Alex is as knowledgeable as he is easy to work with. His mastery of the English language makes it incredibly easy to communicate abstract concepts of design and UX.

Helen Guzenko Partnership Manager at Wezom

5.0★

Startup Review from Helen Guzenko

Wezom is an enterprise software development company with more than 275 specialists. We brought RGray in for startup marketing and growth marketing for a FinTech SaaS platform we had built for a client, an early stage startup with a finished product and almost no market presence. RGray started with their startup marketing foundation: market and competitor research, positioning and messaging, and a growth strategy built on three prioritized hypotheses, each with its own funnel and success metrics. They then implemented the channels: SEO, GEO for visibility inside AI search and AI assistants, PR and digital media, and paid user acquisition to test the funnels fast. Analytics and attribution were in place from the start.They also built AI into the daily marketing work: a custom multi agent system using Claude, Grok, Perplexity and Gemini for research, content production and localization, handed over with workflows, prompts and checklists. Two of the three hypotheses proved out, so we elaborated those two and their funnels. CAC started at $31 and fell to $16 by the end of the test campaign, below the industry average. The campaign brought around 2,500 activated users, which boosted revenue and gave us real data for funnel, user and product analysis. The client finished with a working acquisition system and the documentation to run it, not a set of campaigns. Project management was on time and on budget: weekly calls, a shared board with owners and deadlines, monthly reporting against the strategy metrics, same day answers. When our client's roadmap moved, they resequenced the plan in days. Most impressive: they think like product owners, not like a service agency, and they challenged our ICP and pricing assumptions correctly. One improvement: the early reports were denser than we needed, and they added an executive summary once we asked.

Syed Mohammed Sirajuddin Founder and CEO at Eventas

5.0★

AI Development Review from Syed Mohammed Sirajuddin

We engaged AB Ark Solutions to build Eventas, a full-scale AI-powered event management SaaS platform. The scope was ambitious, covering multi-tenant architecture, WhatsApp and Voice AI assistants, automation workflows, and a premium user interface, and they handled every part of it with professionalism and clarity.From the start, the team took time to genuinely understand the product vision. They did not just execute requirements; they brought ideas, flagged risks early, and structured the entire engagement with proper documentation, milestone planning, and a solid SLA. That level of organization is hard to find.The technical execution was strong across the board. React, Node.js, AWS infrastructure, AI integrations, and Stripe billing were all handled cleanly. What I appreciated most was their focus on user experience. They understood that an MVP needs to look and feel premium if it is going to impress pilot customers, and they delivered exactly that.Communication was consistent, response times were fast, and they were always open to feedback. If you are building a serious product and need a team that treats it with the same seriousness, AB Ark Solutions is the right choice.

Andrew Walker Director at SA Property Investors Network

5.0★

Web Development Review from Andrew Walker

We had an outstanding experience working with the development team on our Property Deal Calculator project. From the beginning, the guys have been proactive, responsive, and extremely committed to bringing the vision to life.The calculator was built specifically to help our clients and SAPIN members analyse property investment deals properly, and the team really understood both the technical side and the practical investor side of what we were trying to achieve.Their communication has been excellent throughout the process, turnaround times have been fast, and nothing has ever felt like too much trouble. They've stayed on the ball, handled changes professionally, and consistently delivered high-quality work.What impressed me most is their willingness to problem-solve and improve the system as we go, rather than just ticking boxes. The end product is clean, functional, user-friendly, and adds real value to our members.Highly recommend these guys to anyone looking for a professional, reliable, and solutions-driven development team. Looking forward to continuing the journey with them.

Charlie Clark Founder at Tracka AI

5.0★

Mobile App Development Review from Charlie Clark

We partnered with AB {Ark} Solutions to build a mobile app that could genuinely stand out in a crowded habit-tracking space, and they delivered across every key area. From the outset, they understood the vision combining a clean, intuitive user experience with powerful features like streak tracking, journaling, and AI-driven insights. Their ability to translate that into a well-structured product roadmap gave us confidence early on, and they followed through with a high-quality build. The app includes everything we set out to achieve, from habit tracking and calendar integration to a fully functional premium subscription model and personalised recommendations powered by AI. What stood out most was their attention to UX and how well they balanced functionality with simplicitycritical for a consumer wellness product. Communication was smooth throughout, with regular sprint calls and responsive collaboration via Slack, which kept everything on track. They hit our goals of building a scalable, feature-rich app within a tight timeline, and the final product feels polished and ready for market. Overall, a strong, reliable partner for anyone looking to build a high-quality mobile app with modern features and thoughtful design.