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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 web application — project by La Tanière Numérique

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 quote

Frequently asked questions

Ready to build your application?

First 30-minute call free. We discuss your project, no strings attached.

Let's talk about your project

You can also read our guide for non-profits.