If you've decided to build cross-platform — and most UK businesses sensibly do — you'll quickly run into the next question: Flutter or React Native? Developers have strong opinions, and the debate can sound like a religious war. But for a founder, the differences that matter aren't technical purity; they're cost, hiring, performance and how well each fits your specific project.
Here's a jargon-free comparison to help you understand the choice, even though your developer will ultimately make the call.
What they have in common
First, the reassuring part: both Flutter and React Native are mature, widely used and capable of building excellent apps. Both let you write one codebase that runs on iOS and Android, delivering the cost and speed savings that make cross-platform attractive in the first place. Big-name apps run on each. Whichever your developer recommends, you're not making a risky bet — both are solid, well-supported choices.
So this isn't about good versus bad. It's about nuances that tip the balance one way or the other for a given project.
React Native: the JavaScript route
React Native, backed by Meta, is built on JavaScript — the most widely used programming language in the world.
Where it shines
- Easy hiring. The vast pool of JavaScript developers means talent is generally easier and cheaper to find.
- Web synergy. If you already have a web product or team using JavaScript, skills and even some code can carry across.
- Mature ecosystem. A huge library of ready-made components speeds up development.
Things to weigh
For very graphics-heavy or performance-critical apps, React Native can occasionally need native tweaks under the bonnet. For the vast majority of business apps, this never becomes an issue.
Flutter: the Google route
Flutter, backed by Google, uses a language called Dart and takes a different technical approach to rendering what's on screen.
Where it shines
- Consistent looks. Flutter draws every pixel itself, so the app looks identical across devices — handy for highly branded, custom interfaces.
- Smooth performance. Its approach often delivers very fluid animations and interactions.
- Strong tooling. Developers often praise its fast development workflow.
Things to weigh
Dart is less common than JavaScript, so the hiring pool is smaller — though it's grown quickly. If finding developers easily and cheaply is a priority, that's worth noting.
A quick comparison
| React Native | Flutter | |
|---|---|---|
| Backed by | Meta | |
| Language | JavaScript | Dart |
| Hiring pool | Larger | Smaller but growing |
| Best for | Web synergy, easy hiring | Custom design, smooth visuals |
How to think about the choice
As a founder, you don't need to pick the framework yourself — but you should understand the reasoning. A few practical pointers:
- Already have a JavaScript web team or product? React Native's shared skills can be a real advantage.
- Building a highly branded, design-led app? Flutter's pixel-perfect consistency suits it well.
- Worried about future hiring? React Native's larger talent pool offers a little more flexibility.
- Unsure? Trust a developer who explains why they recommend one for your specific project.
This decision sits within the wider question of your tech stack, and if you're still weighing cross-platform against native at all, our native vs cross-platform guide is the place to start.
Let the experts decide — but make them explain
The framework matters far less than the team building with it. A skilled developer produces an excellent app in either; a weak one struggles in both. So focus your energy on choosing the right team, then trust their framework recommendation — provided they can justify it in plain terms. Browse vetted UK app development companies in our directory and ask each which framework they'd use for your project and why. A clear, project-specific answer matters more than the name they land on.