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UX/UI design agency, Lyon and Hanoi
Sutunam is a UX/UI design agency with teams in Lyon, France, and Hanoi, Vietnam. With your teams, we design websites, mobile apps and business tools that are simple to use and help your users take action.
Why UX/UI
UX/UI design (designing the user experience and the user interface) decides whether a visitor finds what they are looking for, understands your offer and takes action. We treat it as a matter of results: sales, quote requests, sign-ups, or the daily use of an internal tool.
E-commerce is where we have learned the most about what makes people convert, since 2010. We apply these lessons to every project: mobile apps, brand websites, business platforms and interfaces connected to your data (ERP, CRM, middleware, AI assistants). With one team in Europe and one in Asia, we know the users of both continents, and our working days cover both time zones.
What we design
(Magento, Hyvä, WooCommerce, PrestaShop): product pages, search, cart and checkout.
For iOS and Android: from the audit to the interactive prototype handed over to developers, as for the Yummix app.
Art direction and immersive experience, as for Hotels G.
Interfaces for your teams, connected to your ERP, your CRM or AI assistants, for example to enrich your product pages with AI.
Interfaces everyone can use, following WCAG (the international web accessibility standard), as on the WordPress redesign for a large French group.
Method
01
We start from your data and your real users, not from assumptions. This step answers three questions: who are your users, what are they looking for, and when do they give up?
02
With your teams, we turn these findings into screens. We first draw the page structure (wireframes), then the final interface in Figma. It relies on a design system: a library of reusable components that keeps the product consistent and speeds up development. We also use current AI tools (Freepik’s AI suite, image and text generators) to explore more design directions and produce visuals faster. AI speeds things up; our designers decide.
03
We test the prototype with real users before development: fixing a journey on a mock-up takes a few hours, fixing it in code takes weeks. After launch, we measure and adjust.
Our approach
The diagram above sums up our approach. A good interface sits where three requirements meet: what your users want (desirability), what serves your business goals (viability) and what can be built, in design and in code (feasibility).
Where they overlap, they give our four working principles: UX and innovation at the centre; empathy and trust between users and business goals; creativity and usability between users and design; rationality and consistency between business goals and design.
Every project goes through five planes, from the most abstract to the most concrete. Each one produces its deliverables, which we approve with you before moving on to the next.
ConcreteAbstract
The team
Art director and UX/UI consultant
He leads the design work, from the audit to the design system. He designed the Yummix app and the Hotels G website.
CEO
More than 15 years running digital businesses. As a strategy and tech advisor to marketplaces and online retailers, he connects business goals, automation, the choice of applications and the user experience.
Co-founder and Head of AI
More than 15 years of experience in e-commerce, search engine optimisation (SEO) and performance. He now leads our use of AI, in our design methods as well as in the interfaces we deliver.
Front-end UX/UI developer
He brings interfaces to life: animations, micro-interactions and an integration faithful to the mock-ups.
Projects
Mobile app · UX/UI
Yummix
UX/UI design of the Thermomix recipe mobile app. The full journey was validated in 10 days of design sprints, and the app is rated 4.9/5 on the App Store and Google Play.
Brand website · Art direction
Hotels G
Concept and art direction of an immersive website for a brand of 19 lifestyle hotels in Asia and the United States.
UX optimisation · 2023
Gesat Network
Several UX optimisation projects on its website in 2023.
WordPress · Accessibility
A large French group
Redesign of an accessible WordPress website.
Case study coming soon
Client reviews
In 2023, the Gesat Network entrusted Sutunam with several UX optimisation projects for its website. We are fully satisfied with the work delivered by Sutunam, both technically and in terms of project management. Many thanks to [Sutunam] for its support and agility throughout this project.
Read the review on GoogleTranslated from French
We collaborated with Sutunam to design a mobile application, working together on UX and UI design. The team was attentive to our needs while proposing creative solutions. Their expertise and attention to detail allowed us to design a seamless user experience and a modern interface, aligned with our objectives. This effective collaboration resulted in a high-quality project. I highly recommend Sutunam!
Read the review on Google · See the case studyTranslated from French
FAQ
A few weeks for a mobile app foundation: on Yummix, design sprints delivered a validated interactive prototype in 10 days. A large e-commerce catalogue takes longer. The audit and the first workshops set the scope.
Because changing a journey in a prototype costs hours, while changing it in code costs weeks. Journeys validated with users and your team remove most of the delivery risk.
A library of reusable components, from buttons to complete screens. It keeps the product consistent as it grows and speeds up development.
Yes. On Yummix, Bear Studio developed the app from our interactive prototype. We can also develop it ourselves, on Magento, Hyvä or Symfony.
We apply the WCAG guidelines (the international web accessibility standard) from the design stage: contrast, text sizes, keyboard navigation, readable forms.
Contact
Give us your email and your company: we get back to you within 2 business days to talk about it.
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