Yellow Sapphire Technologies
Overall Review Rating
4.2 (8 Ratings)
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
Yellow Sapphire Technologies Reviews
Have a look at these client reviews on previously delivered projects.
Priya Chandrasekaran
VP of Data & AI - Wavefront Analytics IncConversion 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.
Julien Moreau
Co-Founder & CTO - TechLyon SASThe 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.
Charlotte Nevill
Head of Product - Croydon Digital Agency LtdThe 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.
Tobias Lindemann
Leiter Digitalisierung - Lindemann Industrie GmbHFinally — 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.
Elliot Thorne
Managing Director, Technology - Redwood Capital AdvisorsPerformance-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.