If you need an app on both iOS and Android, two frameworks dominate the conversation: Flutter, backed by Google, and React Native, backed by Meta. Both power apps used by millions of people, and both can deliver the quality your customers expect. The better choice depends on your product, your team and your plans for the next few years.
How each one works
Flutter apps are written in Dart. Flutter draws every pixel of the interface itself using its own rendering engine, Impeller, instead of using the platform's built-in buttons and lists. The same code produces an identical interface on every device.
React Native apps are written in JavaScript or TypeScript using React. The framework translates your components into the platform's real native components, so a list on iOS is an iOS list. Since version 0.76, React Native ships its New Architecture by default, which removed much of the overhead that used to sit between JavaScript and native code.
That difference in approach explains most of the trade-offs below.
Performance
For the apps most businesses build, both frameworks are fast enough that users cannot tell them apart from fully native apps. Screens load quickly, scrolling is smooth and animations run at the display's refresh rate when the code is well written.
Differences appear at the edges. Flutter's own rendering gives it very consistent performance for animation-heavy, highly custom interfaces. React Native benefits from using native components directly, which helps with platform behaviours such as text input and accessibility. For graphics-intensive products such as games, neither is the right tool.
In practice, the quality of the engineering matters far more than the framework. A careless Flutter app and a careless React Native app both stutter.
Look and feel
Flutter gives you the same interface everywhere. That suits brand-led products where the design should look identical on every phone, and it means your designers produce one set of screens.
React Native apps pick up the look and behaviour of each platform by default, so they feel at home on both iOS and Android. You can still build a fully custom design, but you start from native components.
Neither is better. Decide whether your product should feel native to each phone or consistent across all of them.
Hiring and your team
React Native uses JavaScript and React, the most widely used language and interface library in web development. If your company already has a React web app, your developers can contribute to the mobile app, and you can share business logic between the two.
Dart is a smaller ecosystem, though developers who know Java, Kotlin, Swift or TypeScript tend to learn it quickly. Flutter's tooling and documentation are strong, and a dedicated Flutter team is productive.
If you plan to build an in-house team later, look at who you can hire in your market for each framework before you commit.
Native features and the ecosystem
Both frameworks give you access to the camera, location, notifications, biometrics, payments and the rest of the phone's capabilities through mature libraries. When a library does not exist, both let developers write native Swift or Kotlin and call it from the shared code.
React Native's ecosystem around Expo deserves a mention. Expo provides ready-made modules, cloud builds and a smooth path to both app stores, which shortens setup considerably for many projects.
Updates after release
Both frameworks can ship small fixes without waiting for a full app store review, within the stores' rules. React Native apps built with Expo use EAS Update to deliver JavaScript and asset changes over the air. Microsoft retired its older CodePush service in 2025, so new projects should plan around EAS Update or a self-hosted alternative. Flutter projects can use Shorebird for code push.
Store rules still apply: over-the-air updates are for fixes and improvements, not for changing what the app does.
Long-term maintenance
Both frameworks release new versions several times a year, and both depend on a wide ecosystem of open-source packages. Staying current is part of owning either one.
Plan for upgrade work as a normal line in your maintenance budget. Small upgrades take hours. Larger ones, such as React Native's move to the New Architecture, can take weeks for a big app with many native modules. Teams that upgrade little and often spend far less time on it than teams that wait two years and then face several major versions at once.
Before you add a package, check who maintains it, how recently it was updated and how many open issues it has. An abandoned package that handles payments or authentication becomes your problem the day it breaks. Both ecosystems have well-supported options for the common needs, so this is a question of choosing carefully, not of which framework to pick.
Side by side
| Flutter | React Native | |
|---|---|---|
| Language | Dart | JavaScript or TypeScript |
| Rendering | Draws its own interface | Uses native platform components |
| Look across platforms | Identical by default | Native to each platform by default |
| Code sharing with the web | Flutter web, less common for public sites | Shares logic with React web apps |
| Hiring pool | Smaller, growing | Large, via the React ecosystem |
| Over-the-air updates | Shorebird | EAS Update |
| Best fit | Brand-led, custom, animation-rich apps | Teams in React, native feel, shared web logic |
How we choose
We recommend one after discovery, based on four questions:
- Does your company already build with React? If so, React Native lets your teams share skills and code.
- Should the app look identical everywhere, or native to each platform?
- How custom and animated is the interface?
- Who will maintain the app in three years, and what can they hire for?
When neither answer dominates, we lean towards the framework your future team can support, because you will spend far longer maintaining the app than building its first version.
Either way, cross-platform development gives you one codebase and one team for both stores, which is the biggest saving compared with building two native apps. If you are planning an app, our mobile app development team can help you decide, and our guide to launching an MVP in 12 weeks shows how to get the first version live.
Written by the engineering team at Aventra Global LLC, Dubai.