What kind of mobile apps do you build?

I build iOS and Android apps with React Native & Expo: MVPs, consumer apps, rebuilds and migrations, as well as adding features to apps already in production.

Where are you based and do you work remotely?

I am based in Nice, France and work fully remote across France, with on-site visits possible in Paris and elsewhere.

How much React Native experience do you have?

5 years of React Native experience, with apps in production totaling more than 70,000 users.

How fast can you deliver an MVP?

A working MVP can be delivered in a few weeks depending on scope — ideal to test an idea or convince investors.

Available for new projects

Yan

I design and build your mobile apps for iOS & Android.

React Native & Expo · 5 years of experience · 70,000+ users.

Get in touch See my work

Got an app idea? I design it, code it and ship it to iPhone and Android. A single codebase, from idea to store — for startups, scale-ups and agencies.

70,000+

users across shipped apps

5 years

of React Native experience

2 stores

iOS & Android in production

What I do

From idea to app

You have an idea, I turn it into a real application. Design, development and publishing to the App Store and Google Play.

MVP in a few weeks

A first version shipped fast to test your idea in the field, convince investors or launch without waiting.

Rebuild & migration

An app that's slow, crashes or can't evolve? I take it over, make it reliable and faster — Expo migration included.

New features

A feature to add to a production app? I work cleanly on the existing codebase, without breaking things, and I ship.

Selected work

iHoroscope ↗

Lead Mobile

Personalized horoscopes, tarot, chat with astrologers · 10k daily active users

iVoyance ↗

Lead Mobile

Real-time chat between users and psychics · Revenue doubled in 12 months

MyCosmo ↗

Lead Mobile

Cosmospace app, consultations & loyalty · iOS & Android

Seeed ↗

React Native / Expo migration

Technical rebuild and migration of the app to Expo · seeed-app.fr

HearType ↗

Product & dev

AI summaries of WhatsApp/Telegram voice notes · Web SaaS

Gatchu

Lead Mobile

Gamified social ecosystem · iOS & Android

Horoscope.fr ↗

Lead Web

Rebuild & scaling · 50k daily visitors

Stack

React Native · Expo · TypeScript · JavaScript · Next.js · Node.js · GraphQL · Redux · Zustand · React Query · Firebase · Supabase · Stripe · Reanimated · Lottie · i18n · WebSocket · Offline-first · EAS Build · Fastlane · OTA · App Store · Google Play · Sentry · Figma · CI/CD

Why me

70,000+ registered users on the apps I've shipped
5 years of React Native, apps in real production
Clean, TypeScript-typed, well-architected code
Product vision: I think usage and business, not just code
Clear communication, deadlines met
Involved from brief to deployment