App development in Nice.
Client portal, booking tool, internal software or mobile app. We design, build and launch it. From Nice, for companies on the French Riviera and across France.
What we build.
- Client portals: order tracking, documents, invoices, messages.
- Booking and appointment tools, connected to your calendar.
- Internal tools that replace spreadsheets and email threads.
- SaaS platforms, with accounts, subscriptions and online payment.
- Mobile apps, installable on iPhone and Android.
- Web games and experiences, for a brand or an event.
Our apps are live.
They are our proof. You can open and try them. Bien en règle, Color Guesser and Bilber are our own products: we designed, built and launched them ourselves.
- Bien en règlebienenregle.com
A web app on holiday rental compliance, city by city. Online check, PDF report, built-in payment.
- Color Guesserplaycolorguesser.com
A web game translated into 7 languages. Fast on phones, playable without an account.
- Bilberbilber.app
A SaaS platform to create digital product passports.
- PerPostperpost-web.vercel.app
A website and its app.
How a project runs.
- A first exchange to understand the need, the users and the constraints.
- A written scope: screens, features, what goes in the first version and what waits.
- A quote with a firm price and timeline, based on the scope.
- Mock-ups to approve before code, to avoid surprises.
- Development in stages, with a version to test regularly.
- Launch, then follow-up: fixes, improvements, usage tracking.
The tech, in plain words.
We build on solid, widely used tools. Next.js and React for the interface. A Postgres database for your data. Stripe for payments. Vercel hosting, fast across Europe.
For mobile, we often start with a web app that installs on the phone. It costs less and updates without going through the stores. If you need notifications, the camera or offline mode, we build an iOS and Android app.
The code is yours. It lives on your accounts. If you ever change provider, you leave with everything.
Already have a tool?
If an app or a site already exists, we can start with an audit. You will know what works, what blocks your users and what to rebuild first.
An app, and customers to use it.
An app must be found. We also work on the site that presents it, on search and on the campaigns that bring the first users.
Frequently asked questions
How much does an app cost?
It is quoted. The price depends on the number of screens, the features, user accounts and links with your other tools. After a first exchange and a scoping step, you get a firm price.
How long does development take?
Based on the scope, we give you a firm timeline in the quote. A simple first version ships sooner. We then add features in stages.
Web app or mobile app?
A web app works on every device and installs on the phone. It is often the right start. A native app makes sense if you need notifications, the camera or offline mode. We advise you before we start.
Who owns the code?
You do. The code, the data and the accounts are in your name. You can hand the project to another team at any time.
Do you handle maintenance after launch?
Yes. We offer a monthly follow-up: fixes, security updates and small improvements. It is set in the quote.
Do you only work with companies in Nice?
No. We are based in Nice and visit our clients on the French Riviera. We also work remotely with companies across France.
Let's talk about your project.
A few lines are enough. We come back with a proposal and a quote.
contact(a)troiestudio.fr