A disclosure first: Codexlava builds mobile apps in React Native, not Flutter. That is a reason to read the comparison below with care, and a reason we have tried to be fair to Flutter — for some products it is the better choice.
How each one works
React Native, from Meta, lets you write an app in JavaScript or TypeScript using React. Your components become the platform's own native views, so a switch looks like an iOS switch on an iPhone and an Android one on a Pixel. Its New Architecture, now the default, removed much of the old overhead between JavaScript and native code.
Flutter, from Google, uses the Dart language and draws every pixel of the interface itself with its own rendering engine, rather than using the platform's controls. The app looks identical on every device, and the same code can also target web and desktop.
Side by side
| React Native | Flutter | |
|---|---|---|
| Backed by | Meta | |
| Language | JavaScript / TypeScript | Dart |
| Interface | The platform's native components | Drawn by Flutter's own engine |
| Look across platforms | Native to each | Identical everywhere |
| Shares skills with | React websites (e.g. Next.js) | Other Flutter apps |
| Hiring pool | JavaScript developers, very large | Dart developers, smaller but growing |
When React Native is the better fit
- Your website is built in React or Next.js, so components, logic and people can move between web and app.
- You want the app to feel native on each platform rather than branded-identical.
- You expect to hire: JavaScript and TypeScript developers are far easier to find than Dart developers.
- Your backend and tooling are already JavaScript or TypeScript.
When Flutter is the better fit
- The design is highly custom — heavy animation, a distinctive brand look — and must be exactly the same on every device.
- You want one codebase for mobile, web and desktop, and accept that Flutter web suits app-like experiences more than content sites.
- Your team already knows Dart, or is starting fresh with no JavaScript investment to reuse.
What matters more than the framework
For most business apps either framework will do the job well. The decisions that decide whether the app succeeds are elsewhere: what the first version must do, how good the backend it talks to is, and whether someone can maintain it next year. If you are still deciding whether to build an app at all, start with prototype, PoC or MVP, and for budgets see what a React Native app costs in the UK.
Sources
- React Native — Meta Open Source
- Flutter — Google