Groupe Beaumanoir · 2024
Sarenza
4.6 ★ +37,000 ratings on the App Store
Two native apps replaced by a single React Native app, designed and built from scratch for iOS and Android.
Mobile and web development studio in Paris
We design, build and ship your apps.
iOS and Android apps, websites and web apps, from the idea to the App Store and Google Play. For Sarenza, Monoprix, startups, and for our own products.
- 16 years
- of mobile apps, since 2010
- +20
- apps in production
- 48 h
- to get a written quote
They trusted us with their apps
- Sarenza
- Monoprix
- Groupe Beaumanoir
- Vibs
- klood
- GeoWallet
- HR Proximity
Our work. Apps used every day by tens of thousands of people.
Groupe Beaumanoir · 2026
Vibs
4.9 ★ on the App Store
A second e-commerce app for Groupe Beaumanoir, built from scratch and launched on the App Store and Google Play.
Monoprix · 2021
M' Monoprix
No checkout scan and pay in the app
Scan products in store and pay in the app, without going through the checkout. We also built the Monop'Hop app.
Sports & TV · 2020
TV Sports
4.6 ★ +2,000 ratings on the App Store
TV listings for more than 100 sports across 80 channels, with reminders. Native Swift and Kotlin apps, a Next.js website and a Node.js API.
Our products. We also publish our own apps.
Design, back end, subscriptions, store listings, support: what we do for you, we do for ourselves first.
OSS Academy
The app that runs martial arts and combat sports clubs: members, classes, attendance, payments, shop, events and belts.
4 platforms iOS, Android, web and desktop
Coachigo
Workout tracking for personal trainers and their clients: sessions, sets, RPE and progress.
2 sides the coach and their clients in one app
Paris Photographers
A free directory of Paris photographers for couples, proposals and weddings, with no commission.
0% commission, direct contact
ScanFood
Scan a food product and get a score out of 100: Nutri-Score, additives, processing level and organic.
Offline product database downloadable by country
QR Code Reader
Scan any QR code or barcode in a second, and create custom QR codes from 47 content types.
800,000 users, up to 250,000 a day
Pretx
The website of the loan consolidation broker pretx.fr, the brokers' back office, and a chatbot specialized in loan consolidation.
AI chatbot built on OpenAI and LangChain
Histamine Intolerance Scanner
Scan an ingredient list or a barcode to know whether a food is well tolerated.
4.7 ★ on the App Store
GeoWallet
We took over and developed an iOS and Android app based on geolocation, constantly connected to a Bluetooth beacon to track car journeys.
HR Proximity
The iOS and Android app of HR Proximity, a human resources management solution.
Services. Clear offers, prices on display.
- App launchFrom your idea to an iOS and Android app published on the App Store and Google Play, in a few weeks.From €3,900 excl. VAT
- AI-built app rescueYou built your app with Lovable, Bolt, Rork or Cursor and you are stuck. We make it reliable and get it on the stores.From €2,900 excl. VAT
- Custom mobile appA complete iOS and Android app for your business: design, back end, payments, notifications, analytics.From €20,000 excl. VAT
- App rebuild and migrationNative apps merged into one React Native app, a React Native app moved to native Swift and Kotlin, or an aging app rebuilt.From €15,000 excl. VAT
- App Store and Google Play publishingAccounts, listings, screenshots, keywords, privacy forms and submission, for a fixed price.€990 excl. VAT
- Website or web appFast, well-ranked websites, and web apps or back offices built to last.From €990 excl. VAT
- AI integration in your appAn assistant, a chatbot, image or document scanning, built into your app with OpenAI, Claude or on-device models.From €4,000 excl. VAT
- App maintenance and updatesYour app kept up to date with each iOS and Android release, bugs fixed, and small features added every month.From €490 excl. VAT per month
AI writes code faster. We know what to build.
What makes the difference: the architecture, reviewing what AI produces, and a stable app shipped to the stores. A written quote within 48 hours, with a fixed scope and price.
Scoping
Architecture, native or React Native, delivery plan.
Build
React Native, Expo, Swift and Kotlin, with our Claude Code agents.
Testing
Tests on simulators and on the web, code review on every change.
Stores
Builds, screenshots, listings and App Store and Google Play submission.
Got a project in mind?
Tell us about your idea in a few lines. You get a written quote within 48 hours.