TL;DR
Flutter (Google, Dart) draws its own UI, so it looks the same on every device and stays smooth on animation-heavy screens. React Native (Meta, JavaScript/TypeScript) uses native components and lets a React team reuse what it already knows. Flutter is usually stronger on UI consistency, React Native on ecosystem and hiring.
What is Flutter?
Flutter is Google's open-source UI toolkit, written in Dart. One codebase targets iOS, Android, web and desktop. On mobile it compiles ahead of time to native ARM code, and it draws every pixel with its own rendering engine instead of using the platform's widgets. That's why a Flutter UI looks the same on every device.
Google Pay, eBay Motors and Alibaba's Xianyu all run Flutter in production, each for millions of users.
What is React Native?
React Native is Meta's framework for building mobile apps in JavaScript or TypeScript. Your components map to real iOS and Android native views. If your team already writes React, most of the concepts carry over and the learning curve is short.
Side by side
- ✅ Smooth rendering, even with complex animations
- ✅ Identical UI on every platform
- ✅ One codebase for mobile, web and desktop
- ✅ Backed and used by Google
- ❌ Dart is less widespread than JavaScript
- ❌ Larger app binaries
- ✅ JavaScript/TypeScript, which most web devs already know
- ✅ Access to the npm ecosystem
- ✅ Real native UI components
- ✅ Easier hiring (larger talent pool)
- ❌ Heavy screens can need performance tuning
- ❌ Native modules and version upgrades take effort
When to choose Flutter
Pick Flutter when the UI has to match a custom design exactly (fintech, health, e-commerce), when demanding screens need to stay smooth, when you target Android, iOS and web from one codebase, or when you're starting fresh without an existing JavaScript team.
When to choose React Native
Pick React Native when your team already knows React, when you want to share logic or components with a React web app, or when the rest of the company's stack is JavaScript.
In Tunisia, most mobile job postings ask for Flutter, and it's the usual choice for new mobile projects. If you're learning mobile development from scratch here, Flutter is the practical place to start.
My take
Both are production-ready. Flutter has the edge on UI consistency and rendering performance; React Native has the edge on ecosystem and team adoption. For a new project with a team willing to learn Dart, I'd go with Flutter. For a team that already works in React every day, React Native is the shorter path to production.