Independent iOS & Android apps, designed and built in France.
We are a small independent software studio founded by Nicolas Dommanget-Muller. We design, develop, publish and support our own mobile apps on the App Store and Google Play, with a focus on simple, privacy-respecting products that people enjoy using every day.
Our apps
A calm, private journal that notices what keeps coming back in your thoughts: moods, recurring patterns and clear summaries, with no ads and no sign-up.
Learn more →
What we do
- Product design From the first idea to polished interfaces that follow Apple and Google platform guidelines.
- Native-quality mobile development iOS and Android apps built with React Native, TypeScript and native Swift / Kotlin modules where needed.
- Publishing & maintenance We handle App Store and Google Play releases and keep our apps updated for every new OS version.
- Customer support Every user can reach us directly — see our support page.
Our commitments
- Privacy first We collect as little data as possible, never sell personal data and explain everything in our privacy policy.
- Real people behind the apps Questions and bug reports are answered by the person who builds the app.
- Long-term care We maintain our apps over time, fix issues quickly and listen to user feedback.
About the founder
Nicolas Dommanget-Muller is a full-stack & mobile developer with 8+ years of experience building products used by hundreds of thousands of people — from React Native apps to TypeScript web platforms.
Email editor development, new interactive components, TypeScript migration, occasional Go backend work.
Grew and stabilized a React Native app used by hundreds of thousands of users, with native iOS/Android components.
Migrated a PHP web app to React and TypeScript, rebuilding the front-end and modernizing development practices.
Migrated a Xamarin app to React Native and built a shared design system for iOS and Android.
Built a telehealth mobile app from scratch (React Native) alongside a web app for practitioners.
React Native & TypeScript.
Contact
For questions about our apps, partnerships or anything else, email us at contact@nicolas-dmg.fr. App users looking for help can visit the support page.