Custom UX/UI design & product design agency
An interface is understood in three seconds or it loses the user. Our UX/UI design agency designs your interface from start to finish: UX research, journeys, UI design and a design system delivered in Figma, ready to be implemented by your developers.
How do you improve the UX of a website or application?
UX design (User Experience) is the discipline of designing digital products that are easy to understand, fast to use and pleasant to navigate. To improve the UX of a website or application, we start from an analysis of existing journeys (heatmaps, user testing, analytics), pinpoint the friction points, then restructure the screens and interactions based on real user behavior. A good design studio or UX/UI agency combines research, prototyping and testing before delivering a single final mockup.
Why are your screens holding your users back?
Components redrawn five times, colors never quite aligned, journeys designed page by page: your product loses clarity and your team loses time with every iteration.
Inconsistent visuals
Buttons, forms, spacing: every screen has its own version. The user feels the patchwork and loses trust.
Slow production
Without a shared library, every new screen is redrawn from scratch. A brake as your product grows.
Fuzzy journeys
The user hesitates at every step because the visual hierarchy doesn't aid the decision. That fuzziness costs conversion and satisfaction.
Our approach to product design rooted in real usage
We start from your users, map the journeys, build an atomic library delivered in Figma and ready to be coded. Our role as a design studio is to make every screen obvious.
We understand your users
UX research, interviews, testing: we design for real usage, not meeting-room assumptions.
Atomic components
Tokens, atoms, molecules: a modular system that design and dev share identically to avoid back-and-forth.
Delivered ready to code
Variants, states, props: the Figma components reflect exactly what the developer will implement.
A clearer product, a faster team
Less back-and-forth, more consistency, screens understood at first glance.
Guaranteed consistency
Same styles, same interactions, everywhere. No screen looks out of place, whatever team produces it.
Accelerated production
Designer and dev assemble existing components instead of redoing everything. Time-to-market feels it.
Easier onboarding
A documented library that any new hire understands in an afternoon.
Controlled changes
A color or spacing change propagates everywhere, in a single operation.
Our product design expertise, in numbers
What we deliver
Tools
The tools we use.
How does our UX/UI design agency work?
UX research
Users, competitors, analytics: we understand the usage and friction points before drawing anything.
Architecture & journeys
Low-fidelity wireframes, validated on device before the final visuals.
UI & design system
Atomic library, states, dark mode, RGAA accessibility.
Handoff & iteration
Precise specs for dev, implementation follow-up, post-launch adjustments.
Our success stories
Here, our clients share their journey, what they went through and what the collaboration helped them achieve.
We're working with Fragments Studio on the development of Smart Interview, and the experience is excellent. The team quickly grasped our product vision and turned it into a concrete, structured, high-performing solution. Strong technical level, real advisory ability, responsiveness and an eye for detail. Beyond development, they challenge ideas, suggest relevant improvements and move forward with a genuine spirit of partnership. A serious, committed and results-driven studio. I highly recommend them.
Adrien LenoirManaging Director
You put me at ease, that's the word that comes out of working together. We can rely on you, your experience, your know-how. This site is the fruit of that whole journey together, the reflection of serious work full of trust.
Zeina EghoFounder
We had the pleasure of working with Fragments Studio on a specific specialty and we were not disappointed. Talented and committed, their responsiveness and team spirit were major assets in the success of this ambitious project. Technical expertise that met our expectations thanks to their mastery of the technologies used. A smooth and proactive collaboration, with results that matched our ambitions. We recommend them without hesitation! For any company or team looking for skilled, reliable and invested developers, we warmly recommend Fragments Studio. A partner of choice for all your IT projects. Contact them without hesitation.
Christophe HouetIT Project Manager
Working with Fragments Studio was a great experience. They helped me automate part of my prospecting that was taking up a lot of time, with simple and effective solutions. I particularly appreciated their responsiveness and the fact that they always suggest new ideas to improve things. It's a young, dynamic and very approachable team, which makes the collaboration smooth and enjoyable.
Lucie DercksenStrategic Partnership
The team is efficient, proactive and accountable. They quickly understand the needs and the stakes. A project delivered ahead of schedule and with a high level of quality!
Victorien DefosseCEO
A top-notch team. Available, responsive and genuinely attentive! You understood the project and made it your own to address it properly. The dialogue is smooth, simple and effective, which makes the collaboration really enjoyable. The deliverables are high quality and, above all, delivered on time. Thank you for your commitment! I recommend without hesitation.
Diamil GaultierFounder
A great experience with this agency. Attentive, involved and very professional, the team turned a vision into a clear, premium and effective site. The exchanges were smooth and the deadlines were met. A real partner, not just a vendor.
Théo VassouxFounder
Fragments Studio helped us build a robust platform that scales perfectly. Their technical expertise and strategic thinking made all the difference.
Kevin JehuCEO
Fragments Studio helped me structure my project on a solid footing, supported me effectively through the launch and gave me the keys to get started in the best possible conditions. Their perspective, their method and their support were decisive in the first steps of my entrepreneurial journey.
Pierre EscofetFounder
Exchanges with Fragments Studio are smooth, efficient and friendly. Particular attention is paid to responsiveness, both in handling requests and in the time taken to reply. Interactions take place in a pleasant, warm atmosphere.
Philippe ProvotPayroll managerUX/UI design & product design: your questions
Can't find your answer? Write to us, we'll get back to you.
Contact usWe start with a UX audit: analysis of existing journeys, heatmaps, user testing on key screens and a review of analytics data. This lets us precisely pinpoint friction points before touching the design. We then prioritize fixes by impact on conversion or satisfaction, prototype, test again, then deliver the new mockups with a complete dev handoff. A serious UX/UI agency doesn't redesign without first understanding why users get stuck.
The budget depends on the scope: a UX audit and a journey rebuild on an existing product starts at a few weeks of work, while a complete design system with user research is a longer commitment. As a custom product design agency, we scope your needs upfront and give you a clear estimate before starting. The investment is usually paid back through conversion gains and reduced dev back-and-forth.
No, but it's more useful when you have at least some existing screens to rationalize. Without an existing product, we can build a mini design system alongside the MVP: it will evolve with the product and avoid visual debt from the start.
Yes. Logo, palette, typography, brand voice. We work with art directors for projects that need a complete identity overhaul, ensuring consistency between the brand and the digital product.
Yes, design and dev are inseparable for us. The Figma components are designed around what the developer will actually implement: consistent naming, documented props, covered states. This halves handoff time.
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Let's talk about your product design
30 minutes to analyze your product, identify UX gaps and map out a concrete action plan.
Start my design