Design system for app: stop reinventing the wheel for every screen

Every new screen is the same circus: redoing the buttons, reinventing the cards, wasting time. The result? An app that looks like a patchwork and development teams that are in despair. We are building design systems that transform tinkering into industrialization.

*As Soon As Possible (tired of anglicisms)

2.5x

Development time divided (from 8 days to 3 days per flow)

-68%

Reduction of UI bugs through consistency

8 weeks

To move from chaos to an operational system

Our success story

Branding that makes an impression, packaging that stands out on the shelf, campaigns that convert. We design strong visual identities and materials that speak directly to your end customers.

B2C & Retail
Tech companies
B2B Services

Our success story

Branding that makes an impression, packaging that stands out on the shelf, campaigns that convert. We design strong visual identities and materials that speak directly to your end customers.

B2C & Retail
Tech companies
B2B Services

Why does your app cost three times too much to maintain?

Inconsistency is not a style. It is a debt.

The drama of apps without a design system

The unmistakable signs? Primary buttons that change colour depending on the screen. Spacing decided "on feel." Developers asking "but what is the right font again?" The issue is not the talent of your teams. It's the absence of a common foundation. Each feature becomes a one-off. Every onboarding of a junior designer is a nightmare.

01 /

Traditional agencies deliver dead PDFs

Agencies have a solution: to deliver you a nice Figma PDF. 147 slides of guidelines that no developer will ever read. Zero technical documentation. Zero scalability. As soon as your product evolves (spoiler: it's in three weeks), the design system is already obsolete. The result? You have paid €40K for a file that gathers dust. Your teams keep patching things together. Design debt accumulates.

02 /

A living design system. Not a dead deliverable.

We do not deliver a "design system project". We build a scalable infrastructure that becomes the foundation of your product. Integrated technical documentation, components tested with your developers, continuous evolution through subscription. Your product evolves. Your design system does too. Without amendments. Without re-framing. Fixed monthly fee, zero surprises.

03 /

Our ServicesDesign System App

Everything you need, in a single subscription

01 /

Tokens & Atomic Foundations

Colors, spacing, typography defined mathematically. Clear rules that your developers can implement without guessing.

02 /

Documented reusable components

Component library (buttons, inputs, cards) with code examples, do's & don'ts, and real use cases.

03 /

Living technical documentation

Zero PDF. Everything in Storybook, Zeroheight, or your wiki. Accessible, maintained, actionable.

04 /

Co-construction with the developers

We test the implementation sprint by sprint. No "good luck" after delivery. We make sure it works.

05 /

Continuous evolution included

New components, adjustments, maintenance: everything is included in the subscription. No addendums for each addition.

06 /

Drastic reduction in time-to-market

Reusable components = 2.5x faster development. Fewer bugs, less variation, more velocity.

From idea to live site in 4 steps

For emergencies,

delivery possible within 24 hours

with our Boost Mode

From idea to live site in 4 steps

For emergencies,

delivery possible within 24 hours

with our Boost Mode

Week 1-2

Audit & Architecture

We analyse your existing app. Component by component. We identify inconsistencies, duplicates, and faulty patterns. We define the basic tokens (colours, typography, spacing). We validate the roadmap with you. Deliverable: System architecture + prioritized backlog.

Week 3-4

Foundations (Tokens & Atoms)

We build the tokens (design variables) and atomic components (buttons, inputs, badges, etc.). We create the basic technical documentation. We test the implementation with your developers. Deliverable: Operational foundations.

Week 5-6

Basic components

We develop essential components (cards, forms, navigation, modals). Comprehensive documentation with code examples and use cases. Integration tests. Deliverable: Ready-made basic component library.

Week 7-8

Complex components

We are tackling advanced patterns (data tables, dashboards, multi-step flows). We are refining the documentation. We are training your teams in the usage. Deliverable: Complete and operational design system.

Month 3+

Evolution & Maintenance

Your product is evolving. Your design system is too. New components according to your needs. Adjustments on existing components. Maintenance of the documentation. Continuous support. Included in the subscription.

Ready to transform DIY into industrialization?

We analyse your current app and show you concretely what a design system would change. 30 minutes, no bullshit.

Ready to transform DIY into industrialization?

We analyse your current app and show you concretely what a design system would change. 30 minutes, no bullshit.

Why 80% of "design systems" end up as Figma files that are never opened

Created to deliver a project. Abandoned the very next day.

CritèresDafolleAgencyFreelance
Approach
Living, documented, and scalable design system (designed to last 5 years)
Figma component library (created for one project, forgotten afterwards)
Disparate components copied and pasted between projects
Documentation
Complete technical documentation (props, variants, states) + UX/UI Guidelines
PDF of guidelines (never updated)
None (developers decode Figma by hand)
Governance
Defined evolution rules (who creates what, how to add a component)
No governance (everyone creates their component in their corner)
Governance? What is that?
Design/Dev Collaboration
Synchronized tokens (colours, spacings, typography) + Components coded in Storybook
Shared Figma file (developers recreate everything in CSS by hand)
The developer does everything by instinct (spoiler: nothing is pixel-perfect)
Scalability
Designed to support 100+ screens and 10+ future features
Works for the initial project (then it breaks as soon as a feature is added)
It holds together with duct tape and prayers
Maintenance
Continuous updates included in the subscription (new features = new components)
No maintenance (finished project = abandoned design system)
Maintenance? Are you joking (everything has to be paid for again each time)
Result
Cohesive product that scales (e.g., Doctolib, Airbnb)
"Design system" that becomes legacy in 6 months
Frankenstein UI (each screen has a different style)
CritèresDafolleAgencyFreelance
Approach
Living, documented, and scalable design system (designed to last 5 years)
Figma component library (created for one project, forgotten afterwards)
Disparate components copied and pasted between projects
Documentation
Complete technical documentation (props, variants, states) + UX/UI Guidelines
PDF of guidelines (never updated)
None (developers decode Figma by hand)
Governance
Defined evolution rules (who creates what, how to add a component)
No governance (everyone creates their component in their corner)
Governance? What is that?
Design/Dev Collaboration
Synchronized tokens (colours, spacings, typography) + Components coded in Storybook
Shared Figma file (developers recreate everything in CSS by hand)
The developer does everything by instinct (spoiler: nothing is pixel-perfect)
Scalability
Designed to support 100+ screens and 10+ future features
Works for the initial project (then it breaks as soon as a feature is added)
It holds together with duct tape and prayers
Maintenance
Continuous updates included in the subscription (new features = new components)
No maintenance (finished project = abandoned design system)
Maintenance? Are you joking (everything has to be paid for again each time)
Result
Cohesive product that scales (e.g., Doctolib, Airbnb)
"Design system" that becomes legacy in 6 months
Frankenstein UI (each screen has a different style)

The tools we use for Design System App

Any questions? We respond within 48 hours.

It is known that entrusting your design to an external team,
raises some questions. Here are our answers.

What exactly is a design system?

Why not just a nice organized Figma file?

How long does it take to set up?

What technology stack are you working with?

Can we modify/enrich the design system after delivery?

Are you training our teams in the use of it?

How much does it actually cost?

What is the difference with an open-source design system (Material, Ant Design)?

Do you guarantee a reduction in time-to-market?

Can we start with an MVP of the design system?

English