Mobile apps in Belfort and Montbéliard.
iOS, Android, or both at once. From the Territoire de Belfort, we design custom mobile apps, from the specification to publication on the App Store and Google Play, for clients all over the world.
Why a mobile app for your business?
Your customers live on their smartphone: they search, compare and buy there. A well-designed app is a permanent place in their pocket, and a direct, loyal and profitable link with them.

4h a day on mobile
Your customers spend on average 4 hours a day on their smartphone. Your app is direct, permanent access to your service.
Push notifications
Re-engage your users instantly. Promotions, reminders, updates, you're in their pocket, literally.
Native performance
Camera, GPS, NFC, biometrics, a native app taps the full potential of the device for an experience the web can't offer.
Building your app in five steps
No bad surprises. You know exactly where we stand at every moment.
Scoping & specification
Together we define the features, the screens, the priorities. We write a clear specification that serves as a reference throughout the project.
Design & mockups
Wireframes, then high-fidelity mockups. You see and validate every screen before a single line of code is written.
API & back-end development
Database, secure API, business logic. We build your app's engine, robust, scalable and documented.
App development
Native or cross-platform front-end depending on the need. Rigorous testing on every target device. Iterations with you at each sprint.
Launch & support
Submission to the App Store and Play Store, ASO optimisation, and 30 days of post-launch optimisations included.
Design isn't a bonus. It's what makes the difference.
A successful app is intuitive from the very first second. Our design team works hand in hand with the developers to craft elegant, functional interfaces that stay true to your brand, built to convert, retain and delight.
- Intuitive interfaces from the very first second
- Every screen designed to convert and retain
- Elegant design, true to your brand


A solid app, built to last.
We don't ship a prototype held together with tape. We build apps with clean architecture, a robust back-end, and automated tests.
The result: an app that handles the load, updates easily, and evolves with your business without rebuilding everything.
From the Territoire de Belfort, a single point of contact follows your mobile app, for companies in Belfort, Montbéliard and the Swiss Jura as well as for teams working remotely.
Mobile app development
On quote
Tailored to the functional scope
What's included in every project
- Specification writing
- High-fidelity UI/UX mockups
- API & back-end development
- App development
- App Store & Play Store publishing
- Consulting & strategic support
- 30 days of post-launch optimisations
Every project is unique, the scope depends on the functional perimeter. We provide a detailed quote after the scoping phase.
Discuss my app projectExplore more
Our other areas of expertise to take your project further.
Professional showcase website
A site that works for you 24/7, well ranked and fast.
Online payments
Stripe, subscriptions, marketplace: you get paid, we handle the tech.
Custom CRM
A tool tailored to your team that centralises your whole business.
Artificial intelligence
AI where it creates value: agents, automation, document processing.
Web & technical consulting
Strategy, architecture and tailored technical guidance.