React Native vs Flutter: which should you build in?
Both are mature, both are used in production at very large scale, and both will build you a good app. We ship in both, so we have nothing riding on your answer. Here is what actually separates them, and the cases where the decision matters far less than people expect.
If you only read one section
Choose React Native
Pick this if…- Your team already writes React and TypeScript
- You have a web app and want to share logic and types with it
- You want to ship JavaScript fixes without waiting on store review
- You want the largest possible pool of developers to hire from later
- The interface follows platform conventions rather than fighting them
Choose Flutter
Pick this if…- The interface is heavily custom, animated, or brand-led
- You want the design to be pixel-identical on iOS and Android
- You are building a 2D game or something game-like
- You want one language and toolchain with fewer moving parts
- You also want a credible path to desktop from the same codebase
The differences that actually matter
| React Native | Flutter | |
|---|---|---|
| Language | JavaScript / TypeScript | Dart |
| How the UI is drawn | Maps to the operating system's own native components | Draws every pixel itself with a bundled rendering engine |
| Feel across platforms | Inherits each platform's native behaviour automatically | Identical everywhere unless you deliberately branch per platform |
| Heavily custom UI | Possible, but you are working against the native components | Where it is strongest — custom rendering is the normal path |
| Games | Not really its purpose | Genuinely viable for 2D via the Flame engine |
| Instant updates | Over-the-air JavaScript updates are a first-class, widely used feature | Possible, but more constrained and less commonly relied on |
| Code sharing with web | Logic and types share cleanly; UI largely does not | Compiles to web, but poorly suited to pages that must rank in search |
| Desktop | Possible via community projects, less established | First-class targets for Windows, macOS and Linux |
| App binary size | Typically smaller | Typically larger — the rendering engine ships with the app |
| Hiring pool | Very large: most React developers can move across | Smaller, but Dart is conventional and learned in days |
| Backed by | Meta, plus a large independent ecosystem | Google, plus a large independent ecosystem |
Neither column is a verdict. Every row is a trade-off, and which side of it you want depends on the project — which is what the sections below work through.
For most apps, this decision matters less than you think
Teams routinely spend weeks on this choice and then build something where either would have worked identically. If your app is screens, forms, a list, an API and a login — which describes the majority of apps — both frameworks will produce a good result in a similar timeframe, and no user will ever be able to tell which you picked.
The decision earns real deliberation in three situations: the interface is genuinely custom or animation-dense, you are building something game-like, or you have an existing team and codebase whose language you would rather not fragment. Outside those, the far more consequential choices are your data model, your API design, and whether the thing is actually solving a problem someone has.
If you are stuck, the tiebreaker we suggest is continuity: pick the one that the person who maintains this in two years is most likely to already know.
The real difference is who draws the pixels
Almost every practical difference between these two follows from a single architectural decision, and understanding it makes the rest predictable.
React Native maps your components onto the platform's own native widgets. A button becomes a real iOS button. This means you inherit native behaviour for free — scroll physics, accessibility, text selection, keyboard handling, and every visual change a new OS version brings. The cost is that you are working with someone else's components, so an unusual design means bending things that were not built to bend.
Flutter ships its own rendering engine and draws every widget itself, the way a game engine does. Nothing is inherited from the platform, which means nothing is constrained by it either: if you can design it, it can be drawn, identically on both platforms. The cost is the mirror image — native feel is now a decision you have to make deliberately, and an app that ignores platform conventions reads as subtly foreign, which is the origin of most criticism aimed at Flutter apps.
Neither is better in the abstract. One inherits defaults you often want; the other removes constraints you sometimes need.
Performance: close enough that it is rarely the deciding factor
Both compile to genuinely native binaries and both are fast enough for essentially any business application. Flutter has an architectural edge in animation-heavy interfaces because it renders directly without crossing a bridge between JavaScript and native code, and React Native has narrowed that gap substantially with its newer architecture.
In practice, we have never seen a business app where the framework was the performance bottleneck. Slow apps are almost always slow for the same handful of reasons regardless of stack: too much work on the main thread, unoptimised images, chatty or slow APIs, and lists that rebuild more than they need to. Those are engineering problems, and they follow you across any framework you choose.
If your product genuinely lives or dies on sustained sixty-frames-per-second rendering of complex custom scenes, Flutter is the safer default. For everything else, treat performance as a tie and decide on the other criteria.
Hiring, continuity, and what happens in two years
This is the criterion most often skipped and most often regretted. The relevant question is not which framework is more popular in the abstract but who will maintain your app after the initial build.
React Native draws from the JavaScript talent pool, which is the largest in software. Any competent React developer can become productive in React Native quickly, which makes replacement straightforward and gives you more negotiating room. Flutter's pool is smaller in absolute terms, though Dart is an ordinary typed language that an experienced mobile developer picks up in days — the constraint is availability, not difficulty.
Both are backed by companies with strong incentives to continue investing, and both have ecosystems large enough to survive independently of their sponsors. Neither is a meaningful abandonment risk on the timescale of a normal product. What genuinely determines whether your next engineer can take over is code quality, documentation, and architecture — not which of these two you picked.
Answered before you ask
Is React Native or Flutter cheaper to build in?
For a typical app, the difference is small enough to be noise next to scope. Both build iOS and Android from one codebase, which is where the real saving against fully native development comes from — often close to half the build effort, since one team writes one app instead of two teams writing two. Between the two frameworks, cost differences come from context rather than the tools: if your team already writes React, React Native is cheaper because nobody is learning anything; if your design is heavily custom, Flutter is cheaper because you are not fighting native components. Anyone quoting a fixed percentage difference between them is guessing.
Can I switch from one to the other later?
Realistically, the user interface is a rewrite. There is no meaningful migration path between them, because the UI layer is the part that differs most and it is also the part you have most of. What does carry across is everything that is not UI: your backend, your API, your database, your designs, your business logic as a specification, and everything you learned about what users actually do. That is genuinely a large share of the total investment, so switching is expensive rather than catastrophic. Still, plan on this being a decision you keep for the life of the product, and weight continuity accordingly.
Which one do you build in more often?
Historically Flutter, and the portfolio reflects that — most of our shipped mobile and game work is Dart, including 2D games on the Flame engine. We also ship React Native, particularly where a project is AI-heavy or shares a TypeScript backend with a web product. We mention the split because it is honest context for reading our recommendation, not because it should influence your choice: the right answer is the one that fits your team and your interface, and if that is the framework we use less often we will still say so.
Do I need separate iOS and Android developers for either of these?
No, and that is the main reason both exist. One developer writes one codebase that produces both apps. You still need someone who understands the differences between the platforms — store requirements, permissions models, push notification setup, and the design conventions each platform expects — but that is knowledge, not a second hire. Where a genuinely native specialist becomes useful is when you need a custom native module for something unusual, and that is typically a small, bounded piece of work rather than an ongoing role.
Where to go next
React Native development
What we build with it, and how Expo and over-the-air updates fit in.
Flutter development
Custom interfaces, 2D games on Flame, and taking over existing Flutter apps.
Mobile app development
The parent service: scope, timelines, store submission and ownership.
What drives the cost
The factors that actually move a build quote, in order of impact.