Flutter vs React Native: choosing a cross-platform stack

If you're building a mobile app and don't want to maintain two separate native codebases, the practical choice today comes down to two frameworks: Flutter and React Native. We build in Flutter, but the honest answer to 'which should I use?' is that both are good, and the right pick depends on your team and your product more than on any benchmark.

Here's how the two actually differ, and how we'd help you decide.

The core architectural difference

The two frameworks solve the same problem in fundamentally different ways, and almost everything else follows from this.

• Flutter renders its own UI. It ships a rendering engine and draws every pixel itself, so a widget looks and behaves identically across platforms and OS versions. You write in Dart, a typed language built for this.
• React Native bridges to native components. It maps your JavaScript or TypeScript components onto the platform's real native widgets, so the UI really is native, with both the strengths and the per-platform quirks of those widgets.

Neither approach is wrong. Flutter trades a little platform fidelity for total consistency and control; React Native trades some consistency for native components and the vast JavaScript ecosystem.

Why we build in Flutter

For the apps we build, Flutter's consistency and typing win. Because it renders its own UI, behaviour doesn't drift between platforms or surprise you on an older OS version. What you test is what users get. Dart's strong typing, combined with immutable models and predictable state management, keeps a large app maintainable as it grows past the first few screens. And a single rendering path means one mental model for the whole UI, not two.

In practice, those choices shape the code from the first screen: typed, immutable state, one Dart codebase for Android and iOS, and one team that owns both platforms. Features are written once, and there's no native fork to keep in sync.

When React Native is the better call

For some teams we would recommend React Native:

• Your team already lives in JavaScript or TypeScript and React. The shared language and skills are a real, immediate productivity win.
• You want to share logic with an existing React web app.
• Your app leans heavily on native UI components and you want them to be exactly the platform's own.
• You're hiring in a market where React Native talent is far easier to find than Dart talent.

The framework matters less than the fit. A team shipping confidently in the stack they know will beat a team fighting an unfamiliar one, whichever logo is on the box.

What both get right

Whichever you choose, you get the big prize: one codebase, one team, features that land on both platforms at once, and none of the build-everything-twice tax of separate native apps. Both are mature, both are well-supported, and both are used in production by serious apps. This is a good problem to have: there's no bad option here, only a better fit.

When to skip cross-platform entirely

One caveat: if your app's whole value rests on bleeding-edge, platform-specific APIs, or you need the absolute peak of platform performance for something like heavy real-time graphics, fully native iOS and Android may still be the right call despite the double cost. That's a minority of apps, but a real one, and we'll tell you if yours is among them.

If you're weighing this for a real product, we're happy to talk it through against your team and your goals rather than a generic checklist.