In this article
Both frameworks are mature, both ship real products, and both have companies behind them with no plans to stop. So the useful question is not which one is better, but which one fits a particular project and team. Most of our mobile work is in React Native, and we have shipped Flutter as well, so this is how we decide.
What the two frameworks have in common
Each gives you one codebase for iOS and Android, near-native performance for ordinary business applications, hot reload during development, and access to device features through plugins or native modules. For the majority of apps, including everything in our case studies, either framework could have delivered the product. The choice rarely decides whether the project succeeds. It decides who can work on it, how it integrates with the rest of your stack, and how it will age.
Where React Native wins
Your team already knows JavaScript or TypeScript
React Native uses the language and the component model that most web teams already know. If your organisation has React developers, they can contribute to the mobile app within weeks, review its code, and move between web and mobile as priorities change. That is a hiring and staffing advantage that persists for the life of the product.
Logic is shared with a web application
When a product has both a web app and a mobile app, React Native lets the two share validation rules, API clients, state handling and sometimes whole components. For products where the web and mobile experiences evolve together, that sharing removes a class of bugs where the two drift apart.
You want native components
React Native renders platform widgets. A date picker on iOS looks like an iOS date picker, and accessibility features such as screen readers and dynamic text sizing work the way the operating system intends. For apps that have to feel at home on each platform, this is a real advantage.
The ecosystem
Payments, analytics, authentication, maps, push notifications and crash reporting all have well-maintained React Native libraries, and the toolchain, with Expo in particular, has removed much of the native build pain that used to be the framework's weakness.
Where Flutter wins
Highly custom visual design
Flutter draws every pixel itself, which makes it very good at custom, animation-heavy interfaces that look identical on both platforms. The interactive digital gifting app we built is a good example. The product was defined by rich animated experiences, and Flutter's rendering model made those easier to build and keep consistent across devices.
Consistent behaviour across platforms
Because Flutter does not depend on platform widgets, a screen behaves the same on an old Android phone and a new iPhone. For brand-driven consumer apps where pixel-level consistency is a requirement, that is an advantage.
Performance-sensitive graphics
Games, drawing tools and visualisation-heavy screens benefit from Flutter's rendering engine. Most business applications do not reach the point where this difference is visible.
A Dart-friendly team
Dart is a pleasant language, but it is used almost nowhere outside Flutter. Teams that have invested in it are productive. Teams that have not face a learning curve and a smaller hiring pool.
Questions we ask in discovery
- Is there a web application, and will it share logic with the mobile app? If yes, React Native.
- Who will maintain the app in two years? If the answer is your own web team, React Native.
- Is the product defined by custom animation and a fully bespoke look? If yes, Flutter deserves serious consideration.
- Does the app depend on a specific native SDK? Check which framework has the better-maintained binding before deciding anything else.
- Does the app have to feel native on each platform, including accessibility? If yes, React Native.
What does not decide it
Raw performance for ordinary screens, the size of the community, and whichever framework had a bad week on social media. Both are fast enough for forms, lists, maps and media. Both have large communities. Both will still be here in five years.
Our default, and when we break it
Our default is React Native, because most of our clients have web teams, most products have a web counterpart, and the ecosystem suits the integrations business apps need. We recommend Flutter when the product is visually bespoke and animation-led, or when a client already has a Dart team. We say which one we would choose, and why, during scoping rather than after the contract is signed.
If you are weighing the two for a specific product, describe it to us. Our React Native and mobile development pages cover how we work in each.