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Yellow Sapphire Technologies

Overall Review Rating

4.2 (8 Ratings)

Quality 4.1/5
Schedule 4.1/5
Cost 4.2/5
Communication 4.0/5

Services

  • Hybrid App Development
  • Digital Marketing
  • Drupal
  • Enterprise App Modernization
  • Web Development
  • CMS Solutions
  • iOS App Development
  • Cloud Migration Services
  • Android App Development
  • AI Development
  • Mobile App Development
  • Cross Platform Development

Industries Served

Construction Insurance Nonprofit & NGO Pharmaceuticals & Biotechnology Sports & Fitness Travel & Hospitality

Yellow Sapphire Technologies Reviews

Have a look at these client reviews on previously delivered projects.

Priya Chandrasekaran

VP of Data & AI - Wavefront Analytics Inc
Posted on Jun 18, 2026
4.0 Overall Rating

Conversion rate improved from the first week in production. Design decisions backed by data.

We received proposals from six vendors. Four of them quoted us prices that bore no relationship to the actual scope. This team came back with something realistic and then delivered against it exactly. I have worked on enough technology projects to know that the gap between what is proposed and what is delivered is where trust gets destroyed. There was no gap here. What was promised is what we got, and the ongoing relationship we have built from this is something we intend to continue.

Project summary

OTA dependency was hurting our margins. A direct booking experience that could genuinely compete required an investment we had been postponing for too long.

Quality 4.0/5
Schedule 4.0/5
Cost 4.0/5
Communication 3.5/5
project type
Project Type UI/UX Design
industry
Industry Travel & Hospitality
project cost
Project Cost $50,000 to $149,999
Read Full Review

Julien Moreau

Co-Founder & CTO - TechLyon SAS
Posted on May 25, 2025
4.5 Overall Rating

The outcome we needed, on the timeline we needed it, by people we would use again

I have been through several technology implementations in my career. The pattern I am used to is: detailed proposal, optimistic timeline, scope creep, overrun, excuses at the end. This engagement broke that pattern at every stage. The timeline was realistic from the start. Changes were managed through process. The final delivery matched what was agreed. Simple, but uncommon.

Project summary

The project had a board-level visibility date. We needed a partner who would treat the deadline as their own.

Quality 4.5/5
Schedule 4.5/5
Cost 4.5/5
Communication 4.5/5
project type
Project Type POS System Development
industry
Industry Construction
project cost
Project Cost Less than $10,000
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Charlotte Nevill

Head of Product - Croydon Digital Agency Ltd
Posted on Oct 13, 2024
4.0 Overall Rating

The team understood mobile-first before we finished explaining the brief

The platform has been live for six months and is handling three times the transaction volume we scoped for. That is not because we underestimated — it is because the architecture choices made during discovery were genuinely forward-thinking. Most vendors design for exactly what you tell them. This team designed for what you are likely to need. We are already scoping the next phase and there was no question about who we would use.

Project summary

Traceability legislation had set a compliance deadline that was not negotiable. Our supply chain system needed targeted development and we needed people who had done it before.

Quality 4.5/5
Schedule 4.0/5
Cost 4.0/5
Communication 4.5/5
project type
Project Type Mobile App Development
industry
Industry Pharmaceuticals & Biotechnology
project cost
Project Cost $150,000 to $499,999
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Tobias Lindemann

Leiter Digitalisierung - Lindemann Industrie GmbH
Posted on Jan 05, 2024
4.0 Overall Rating

Finally — ML that our operations team actually uses rather than ignores

The knowledge transfer at the end of the project was notably good. Too many vendors see handover as a tick-box exercise. This team ran structured sessions, produced documentation our internal team actually references, and spent real time making sure we understood the architecture decisions well enough to maintain and extend the system independently. Six months later we are doing exactly that without needing to go back to them for every question.

Project summary

Our product thinking was strong. Our execution capacity in this specific domain was limited. We needed deep expertise, not a generalist willing to learn on our time.

Quality 4.0/5
Schedule 3.5/5
Cost 4.5/5
Communication 4.0/5
project type
Project Type AI & Machine Learning
industry
Industry Nonprofit & NGO
project cost
Project Cost $50,000 to $149,999
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Elliot Thorne

Managing Director, Technology - Redwood Capital Advisors
Posted on Apr 15, 2023
4.0 Overall Rating

Performance-first development that Google confirmed was worth it

We have worked with a few agencies over the years and the comparison is honestly not close. What stood out from the start was that they spent serious time understanding the problem before they proposed anything. Once development started, every sprint review was clean — no hidden surprises, no slipped milestones. The production system has been running for four months without a single critical issue. Our internal developers reviewed the codebase at handover and were genuinely complimentary about the quality. That does not happen often.

Project summary

Broker portal satisfaction scores had fallen for two consecutive years. Specific feedback pointed to the same workflow frustrations. We needed a redesign, not a patch.

Quality 3.5/5
Schedule 4.0/5
Cost 4.0/5
Communication 3.5/5
project type
Project Type Web Development
industry
Industry Insurance
project cost
Project Cost $50,000 to $149,999
Read Full Review
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