UX design agency in Paris
UX and UI design for Paris companies: research, tested prototypes, UI and design systems in French and English, accessible to WCAG 2.2 AA.
- Custom quote after a brief
- No sales pitch
Company-wide:★★★★★ 4.9+ on Clutch·250+ brands·10 offices
UnFoldMart is a UX design agency (agence UX) with an office at 75 Avenue de la Grande Armée, 75016 Paris. We do UX research and audits, user flows, wireframes, tested prototypes, UI design and design systems for apps, e-commerce and SaaS products, designed to WCAG 2.2 AA with the European Accessibility Act and CNIL guidance on consent in mind. Meetings are by video in English; pricing is a custom quote after a short brief and a free 30-minute call.
Last updated:
Key facts
| Service | UI/UX and product design: UX research and audits, user flows, wireframes and tested prototypes, UI design, design systems in Figma, accessibility to WCAG 2.2 AA, developer handoff |
|---|---|
| Company | UnFoldMart |
| Office | 75 Avenue de la Grande Armée, 75016 Paris, France |
| Meetings | By video (in-person meetings only at our Frankfurt and Zürich offices) |
| Languages | First call and project calls by video, in English |
| Time zone | Central European Time (CET/CEST); project teams are led from our international offices |
| Typical timeline | Research and audit 1–3 weeks · structure and flows 1–2 weeks · prototype and testing 1–3 weeks · UI and design system 2–6 weeks (ranges, not guarantees) |
| Pricing | Custom quote after a short brief: fixed-scope project, ongoing design support or a UX audit first. No price list. |
| Booking | Free 30-minute video call ↗ |
| Company-wide | 10 offices in 10 markets · 250+ brands · 500+ projects · 4.9+ on Clutch · 8 working languages · Webflow Certified Partner |
UX and UI design for Paris companies
Paris is home to luxury, fashion, retail, tourism, finance and a large start-up scene. Brands here expect interfaces that feel premium, work in French and English and respect strict consent rules.
Paris at a glance
- IndustriesLuxury, fashion and retail, tourism, SaaS, finance, media
- Data lawGDPR and the Loi Informatique et Libertés, supervised by the CNIL
- PaymentsCartes Bancaires (CB) cards, Apple Pay, Google Pay, PayPal
- LanguagesFrench and English
- Time zoneCET in winter, CEST in summer
Luxury, fashion and retail
Refined, mobile-first product and checkout experiences that stay accessible.
Tourism and travel
Search, booking and account flows for visitors in several languages.
SaaS and start-ups
Product design and design systems for teams shipping often.
What our UX and UI designers in Paris do
UX research, app and web app design, UI design and design systems, in French and English.
UX research
Interviews, analytics, support tickets.
UX audit
Your product reviewed, issues ranked.
Flows and structure
Information architecture, key journeys.
Wireframes and prototypes
Clickable, tested before build.
UI design
Every screen and state.
Design systems
Figma components, in step with code.
UX audit, redesign or design system?
Three common ways to start. We recommend one after the first call, based on your product and goals.
| UX audit | Redesign | Design system | |
|---|---|---|---|
| You get | Ranked usability and accessibility issues | New flows, prototype and final UI | Figma components, tokens and usage rules |
| Best when | You need to know what to fix first | The product is hard to use or out of date | Several teams design and build in parallel |
| Research | Expert review plus your data | Interviews and usability tests | Audit of existing screens and code |
| Typical start | Fastest start | After research and scope | Alongside or after a redesign |
Products we design
Common product types; illustrative screens, not client work.
SaaS dashboards
Data people can act on.
Mobile apps
iOS and Android screens.
Booking and checkout
Fewer steps to done.
- Chat interfaces
- Review and approval
- Clear AI labels
- Feedback controls
How we work
Five steps, tested with users before anything is built.
- 1ResearchInterviews, analytics, audit
- 2FlowsStructure and wireframes
- 3Prototype and testWith real users
- 4UI and handoffDesign system, specs
Timeline
| Phase | Typical duration | You get |
|---|---|---|
| Research and audit | 1 to 3 weeks | Research findings and ranked UX issues |
| Structure and flows | 1 to 2 weeks | User flows and wireframes |
| Prototype and test | 1 to 3 weeks | Tested clickable prototype |
| UI and design system | 2 to 6 weeks, by screen count | Final UI, every screen and state, design system |
| Handoff and build support | During build, as agreed | Specs, tokens and design review during build |
Typical ranges in weeks, not a guarantee.
Designed to WCAG 2.2 AA
Our default target, specified in every design. Full conformance also depends on the build; we review it with your developers.
- Colour contrastSC 1.4.3
- Visible focusSC 2.4.7
- Target sizeSC 2.5.8
- Text alternativesSC 1.1.1
- Keyboard pathsSC 2.1.1
- WCAG 2.2 (W3C) ↗Source
How to choose a UX design agency in Paris
Six checks before you sign, whoever you hire.
Research before pixels
Ask how they find out where users get stuck: interviews, analytics, usability tests.
UnFoldMart: Research and audit come first, sized to your questions.
Accessibility built in
Ask which standard they design to and how they document it.
UnFoldMart: WCAG 2.2 AA by default, noted in every design.
A tested prototype
A clickable prototype tested with real users before development starts.
UnFoldMart: Prototype and test rounds before handoff.
A design system, not just screens
Reusable components and rules, so new screens stay consistent.
UnFoldMart: Figma components and tokens, in step with code.
Developer handoff
Specs your developers can build from, and a review of the build.
UnFoldMart: Specs, annotations and build review.
Ownership of the files
Who owns the Figma files, research and components at the end.
UnFoldMart: All design files are yours.
UX agency, freelance designer or in-house team?
| UX agency | Freelance designer | In-house team | |
|---|---|---|---|
| Skills | Research, UX, UI and design systems in one team | Usually one specialism | The roles you hire |
| Start | After scope and quote | Often quick | After hiring |
| Continuity | Team covers absences and handover | Depends on one person | High while the team stays |
| Your management effort | Low to medium | Medium to high | High |
| Cost model | Project quote or monthly support | Hourly or daily rate | Salaries, hiring and tools |
| Best for | A full product or redesign | A defined, smaller task | A long-term core product |
What affects the cost
No price list. Your quote depends on these factors.
- Journeys and screensHow many, how complex.
- Research depthInterviews, test rounds.
- PlatformsWeb, iOS, Android.
- Design systemNew, or extend yours.
- TimelineYour release date.
- Languages and brand detailFrench and English versions and detailed brand work, such as custom icons or motion, add design time.
Ways to work with us
Fixed-scope project
A new product or a redesign.
Ongoing design support
Monthly, alongside your developers.
UX audit first
Ranked issues you can use anywhere.
How quoting works
- Short briefYour product and users.
- Free 30-minute callBy video, in English.
- Written estimateScope, timeline, price.
- You decideNo obligation.
Recent UI/UX work
Two client websites where we designed the UI/UX.
Aytrus
Singapore · Luxury candles
Minimal, mobile-first UI and UX for a new luxury brand's Shopify store.
Re-Twin Energy
Germany · Energy
The entire UI/UX design for their website.
Your product next?
Show us your product or idea in a free 30-minute call; we suggest where to start and quote in writing.
Book a free call ↗Accessibility and consent in France
This is general information, not legal advice. Your legal adviser has the final word.
European Accessibility Act
EU countries apply the European Accessibility Act through national law from 28 June 2025. It sets accessibility requirements for many consumer services, such as e-commerce and consumer banking. We design to WCAG 2.2 AA.
Official source: Directive (EU) 2019/882 (EUR-Lex) ↗GDPR and the Loi Informatique et Libertés
The GDPR sets the rules for personal data across the EU; France's Loi Informatique et Libertés adds national rules. We design forms and privacy notices that are clear and collect only what a journey needs.
Official source: Loi Informatique et Libertés (Légifrance) ↗CNIL and cookie consent
The CNIL is the French data protection authority. Its guidance on cookies expects refusing to be as easy as accepting; we design consent banners that follow it.
Official source: cnil.fr ↗Public standards we design to
Working with us from Paris
One dedicated team; projects are led by UnFoldMart from our international offices.
Our Paris office
75 Avenue de la Grande Armée, 75016 Paris
By video
Workshops, research sessions and design reviews by video.
Language
Calls and project work in English.
Time zone: Central European Time (CET/CEST)
Office-hours overlap: –
09:00–18:00 local time in both offices. Same time zone as our Amsterdam, Frankfurt, Zürich, Madrid and Warsaw offices.
Company-wide figures across all our services, not only UI/UX projects.
- Zürich · in person
- Frankfurt · in person
- London
- Amsterdam
- Paris
- Madrid
- Warsaw
- Singapore
- Vancouver
- Gurugram
Frequently asked questions
UI/UX design in Paris: before you book a call.
Do you have a UI/UX design office in Paris?
Yes. Our Paris office is at 75 Avenue de la Grande Armée, 75016 Paris. Workshops, research sessions, design reviews and weekly check-ins take place by video, in English. In-person meetings are available at our Frankfurt and Zürich offices.
How much does UI/UX design cost in Paris?
Pricing is custom. It depends on the number of journeys and screens, research depth, platforms, whether you need a new design system and your timeline. After a short brief and a free 30-minute call, you get a written estimate.
How long does a UI/UX design project take?
Typically: research and audit 1 to 3 weeks, structure and flows 1 to 2 weeks, prototype and testing 1 to 3 weeks, UI and design system 2 to 6 weeks depending on screen count. These are ranges, not guarantees.
What is the difference between UI and UX design?
UX design is how a product works: structure, flows and how easily people finish tasks. UI design is how it looks: layout, type, colour and components. We do both, starting with UX.
Will our design be accessible?
Yes. WCAG 2.2 level AA is our default target, specified in every design, which helps you meet rules such as the European Accessibility Act. Full conformance also depends on the build, so we review it with your developers.
Can you also build what you design?
Yes: our app development team can build it, or we hand over specs and design tokens to your developers and review the build with them. Projects are led by UnFoldMart from our international offices.
Can you design in French and English?
Yes. We design layouts for both languages from the start, so longer French text and tone work in every component. Your team or translator provides the final French copy if needed.
Have you designed for luxury brands?
Yes. For example, we designed a minimal, mobile-first UI and UX for the Shopify store of Aytrus, a luxury candle brand from Singapore; you can read the case study on our site.
How do you design cookie consent for French users?
We design consent banners where refusing is as easy as accepting, with clear choices, in line with CNIL guidance. Your privacy team confirms the wording.
Who works on our project, and how do we communicate?
A small dedicated team, led by UnFoldMart from our international offices. Calls are by video in English, with design reviews in Figma at each step.
Making your product easier to use in Paris?
Show us your product or your idea; we suggest where to start and quote in writing.