Background
At Cyberix Digital LLC, we've shipped production apps in both Flutter and React Native. We've built WeBurn, Ostello, Kinder Messenger, and Moongres in Flutter. We've shipped Wevent and Kajabi Creator in React Native.
This isn't a theoretical comparison. It's what we actually deal with on a daily basis.
The Fundamental Difference
Flutter uses its own rendering engine (Impeller/Skia). It draws every pixel itself, like a game engine. It doesn't use native platform widgets at all.
React Native creates a bridge to native platform widgets. When you render a Button, it renders an actual iOS UIButton or Android Button behind the scenes.
This single architectural decision explains almost every difference between the two.
Performance
Flutter wins for animation-heavy UIs.
Because Flutter controls every pixel, its animations run at a rock-solid 60fps with no bridge overhead. We've shipped apps with complex gesture animations and particle effects in Flutter and they run butter-smooth.
React Native improved dramatically with the New Architecture (Fabric + JSI), which eliminates the JavaScript bridge. But Flutter still has an edge on complex, custom UIs.
For typical CRUD apps and standard navigation, both are smooth. The difference shows at the edges, complex gestures, long lists with complex cells, heavy animations.
Development Experience
React Native wins for JavaScript developers.
If your team knows React and JavaScript, React Native has a lower learning curve. You're writing JSX, using hooks, and the mental model transfers directly.
Flutter uses Dart, a modern, strongly typed, fast language. But if your team has never used Dart, that's an onboarding cost. Flutter uses a widget composition model where everything is a widget, nested inside other widgets.
That said, after 2 weeks in Flutter, most developers we've onboarded prefer it. The tooling is exceptional.
UI Customisation
Flutter wins decisively.
Because Flutter draws its own UI, you can make it look exactly like your Figma designs, on iOS and Android, pixel-perfectly. There are no platform conventions to fight.
With React Native, if you want something that looks identical on both platforms, you often need custom native modules or third-party libraries. Platform-specific behaviour bleeds through in ways that require platform-specific code paths.
The Ecosystem
React Native wins on ecosystem maturity.
React Native is backed by Meta and has been around since 2015. The npm ecosystem has millions of packages, and most popular services have well-maintained React Native SDKs.
Flutter's pub.dev ecosystem is growing fast. For most things you need, there are solid packages. But you'll occasionally find a package that's abandoned or doesn't fully support one platform. This is improving every quarter.
When We Choose Flutter
- The UI is complex, custom, or highly animated
- The client wants identical UI on iOS and Android
- Performance is critical (gaming-adjacent features, complex gestures)
- Long-term maintainability is prioritised, Dart is a cleaner language for large codebases
Our Flutter apps: WeBurn, Ostello, Kinder Messenger, Moongres, Bayut Oman
When We Choose React Native
- The team is JavaScript-first
- There are web equivalents that share business logic
- Speed-to-market is the primary concern and the team already knows React
- The project requires JavaScript-specific packages without Flutter equivalents
Our React Native apps: Wevent, Kajabi Creator
The Honest Verdict
Both are production-ready in 2025. Neither is dramatically better than the other for standard apps.
Choose Flutter if: You prioritise UI consistency, performance, and you're starting fresh with a team willing to learn Dart.
Choose React Native if: Your team is JavaScript-heavy and you want to maximise code sharing with a web codebase.
At Cyberix, we've defaulted to Flutter for new projects since late 2023. The UI consistency, performance, and growing ecosystem have won us over.