Custom web application development
Progressive web apps, internal tools, multi-role platforms. Built with Next.js and Supabase to last.
When a showcase site isn't enough
Your business is growing, and so are your digital needs. Managing members, centralising data, automating processes, offering a client area — all needs a simple showcase site can't cover.
That's where the custom web application comes in. Unlike an information site, a web app is an interactive tool connected to a database. It lets your users log in, perform actions and interact with your service in real time.
Use cases are plentiful: association management platform, analytics dashboard, client portal with billing, booking tool, installable PWA. Every project is unique, which is why we build every application custom.
Our technical stack — Next.js + Supabase — offers the best balance between power and development speed. Supabase provides a robust PostgreSQL database, a full authentication system and real-time APIs. All hosted on scalable infrastructure, ready to support your long-term growth.
What's included
- Installable progressive web app (PWA)
- Authentication and role management
- PostgreSQL database (Supabase)
- Real-time APIs
- Stripe / third-party service integration
- Iterative delivery with continuous preview
- Technical documentation
- 60 days of post-delivery support
Our technical approach
Every application is built with Next.js on the front end and Supabase on the back end. This combination provides a PostgreSQL database, secure authentication, serverless functions and real-time APIs — with no servers to manage.
We work iteratively. Every week you receive a preview link to test new features and share feedback. No opaque development tunnel: you watch your application take shape in real time.
For payments we integrate Stripe, the global reference in online payments. Subscriptions, one-off payments, automatic invoices — all handled natively in your application.
Related project

Helpho.io
Matchmaking platform with authentication, Stripe payment and dashboard
See also Graines de Footballeuses, a non-profit platform with member and event management.
€3,000
Delivery: 1 to 3 months
Every application is unique. Contact us for a quote tailored to the complexity of your project.
Request a free quoteFrequently asked questions
Ready to build your application?
First 30-minute call free. We discuss your project, no strings attached.
Let's talk about your projectYou can also read our guide for non-profits.