Freelance Android developer · mobile & web apps · France

Android & web app developer: I design, ship and grow your mobile apps.

Independent Android and cross-platform developer, publisher of two apps on Google Play. I build your mobile and web apps from idea to launch, and help publishers reach real users.

Android Kotlin · Jetpack Compose Flutter React Native React Node.js PHP
My apps

Two apps designed, built and published end to end

Native Kotlin code, in-house backend, in-app purchases, publishing and maintenance on Google Play.

Dubsiren27 app icon

Dubsiren27

Music & audio · Android

A live reggae & dub radio you can dub: about fifty stations, a real dub mixing board (EQ, delay, sirens played with your fingers), a worldwide gig guide with a map and clips, and a bass module that doubles as a USB MIDI expander.

  • Kotlin, real-time audio processing
  • Moderated PHP / SQLite backend, MapLibre map
  • Server-verified in-app purchase
OnCotiz app icon

OnCotiz

Finance · Android

The group money pot for friends, no account and no fees: create a pot in a minute, share the link, everyone pays by direct bank transfer via a QR code. Live tracking, podium, badges, cartoon avatar and end-to-end encryption.

  • Kotlin, Jetpack Compose
  • End-to-end encryption on the phone
  • 9 languages
Custom development

Hire a developer for your app

Freelance, fixed-price or time-and-materials: I take on all or part of your mobile or web project.

Native Android apps

Kotlin, Jetpack Compose, audio, maps, in-app purchases, notifications, widgets, Google Play publishing.

Cross-platform apps

Flutter or React Native: one codebase for Android and iOS.

Web & back-end

Websites and web apps in React, Node.js or PHP APIs, SQL databases, hosting and deployment.

Publishing & compliance

Play Store listing, Data safety, privacy policy, release management and closed testing.

Takeover & maintenance

Audit, fixes, target SDK updates, performance and stability of an existing app.

Fast MVP

A working prototype to test your idea with real users before investing further.

Coming soon

User acquisition & app testing SOON

A single French point of contact for indie developers and game studios in France and Europe: I coordinate hand-picked acquisition partners and a European network of paid testers.

Mobile user acquisition

Campaigns for Android and iOS apps and mobile games, run with specialist international partners and managed by me end to end.

  • Installs, activations and real engagement measured
  • Clear reports, quality goals, not just volume
  • Campaigns that follow store policies

App and game testing

A European network of paid testers, recruited and coordinated by me, on real devices.

  • Reproducible bug finding and reporting
  • UX feedback and reasoned reviews
  • Support for Google Play closed testing
  1. BriefYour app, your audience, your budget.
  2. PlanChannels, partners and testers chosen.
  3. LaunchCampaign and tests monitored daily.
  4. MeasureReport on truly active users.
Contact

A mobile or web app project?

Tell me about your idea, timeline and budget: I reply within 48 hours. Also the contact for Dubsiren27 and OnCotiz app support.

[email protected]