Flutter or React Native: why we use both, and how we pick

Travel Quoter's iOS and Android apps are written in Flutter. A member app we built in 2024 for a professional association in Nepal is written in React Native with Expo. Same team, two different answers.

Clients sometimes read that as indecision. It isn't. The framework is rarely the thing that decides whether an app works out, and the arguments people have about it online are mostly about performance, which stopped being the deciding factor for business apps some time ago. What decides it is who will maintain the app, how it should look, and how quickly you need to ship a fix.

Our short answer: React Native when the people who will look after the app already write React and TypeScript, Flutter when the design has to be identical on every phone and the team is happy to own a second language. Either way, the API behind the app matters more than the framework in front of it.

Both are mature now, so speed is not the tiebreaker

A few years ago there was a real performance gap to argue about. Both projects have since replaced the parts people complained about.

React Native made its New Architecture the default in version 0.76, released in October 2024. Flutter's newer renderer, Impeller, is the default on iOS and on Android API 29 and above as of Flutter 3.27, and on iOS it is the only renderer.

For the kind of apps most businesses ask us for (booking, quotes, member portals, student records, chat with an agency) either one is fast enough. If someone's main argument for one framework is a benchmark, ask what the app actually does on screen.

Who will maintain it after launch

This is the question we weigh most, because an app lives far longer than the project that built it.

React Native is JavaScript or TypeScript and React. Most of the web projects on our projects page are Next.js and React. If your own developers, or the next company you hire, write React for the web, a React Native app is code they can already read.

Flutter is written in Dart. Dart is a good language, but your web developers probably don't write it. Choosing Flutter means whoever maintains the app needs Flutter skills specifically, and that is worth knowing before you sign, not when your vendor relationship ends.

None of this matters much if the same team runs the web app, the API and the mobile app for years. It matters a great deal if the app will change hands. We covered the account side of that (who owns the store listings and keys) in choosing a mobile app company in Nepal.

How it should look

The two frameworks put pixels on screen in different ways.

React Native renders the platform's own components, so an app tends to look like an iPhone app on an iPhone and an Android app on Android. Flutter draws its own interface with its own renderer, so the same screen looks the same on both.

Neither is better in general. If your brand needs one exact design everywhere, with custom animation and nothing that looks like a stock control, Flutter makes that the default. If you would rather the app feel at home on each phone, React Native gets you closer with less effort.

How fast you need to ship a fix

Every app store release goes through review on the store's own schedule. For most apps that is fine. For an app that people rely on daily, the gap between finding a bug and users having the fix is real.

Expo, which React Native's own documentation recommends as the framework for new apps, has a service called EAS Update that can push changes to an app's JavaScript, styling and images over the air. It can't change native code or permissions, and app store rules still apply to what you push. But a wrong label or a broken screen can be fixed without a full store release.

What matters more than either

In both Flutter projects on our projects page, the app is not the system. Travel Quoter runs a Next.js web app for travellers and agencies on a NestJS API, and the Flutter apps sit on the same API. EMIS for Kathmandu University School of Education is a web app and API with a Flutter app alongside.

Because the logic lives in the API, the mobile framework is a front-end choice, and front ends can be replaced. An app with its business rules buried inside the app itself is the one that becomes expensive, in either framework. If you are still deciding whether you need an app at all, start with website, web app, or mobile app.

If this is true	We lean towards
Your web team writes React and TypeScript and will maintain the app	React Native with Expo
You want small fixes out without waiting for a store release	React Native with Expo
One exact design on every phone, with custom animation	Flutter
The same team runs the API, web app and mobile app long term	Either, so pick the one that team knows best

We build in both through our mobile app development work. If you have been told one framework is the only sensible choice, ask us and we will tell you which we would pick for your app, and why.