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Arterns Technologies

Mobile Development

React Native or Flutter? How to Pick for Your Startup in 2026

We build with both. Here's how we actually decide between React Native and Flutter for a startup app: hiring, code sharing, updates, design and cost.

Arterns TechnologiesUpdated 5 min read

Illustration of two phones, one with native list components and one with a custom-drawn interface, sharing code

If you're building a mobile app this year, you'll almost certainly build it cross-platform: one codebase for iOS and Android instead of two separate native apps. That leaves you with two real options, React Native and Flutter.

Both are mature. Both run inside big, well-known apps. Either one can produce an app your users will never suspect is cross-platform. So the useful question is which one fits your team and your plans for the next couple of years.

If you just want our opinion: for most startups we recommend React Native with Expo. We pick Flutter when the design is the product. The rest of this post is why.

How each one works

React Native lets you write your app in TypeScript or JavaScript using React. Your components turn into real native views, so a button is the platform's own button and a list scrolls the way iOS or Android users expect.

It used to have a reputation for being slow, mostly because of the old "bridge" between JavaScript and native code. The New Architecture, which became the default in late 2024, removed that bridge, and most of those complaints went with it.

The React Native team now recommends starting with a framework, which in practice means Expo. Expo handles builds, native modules, navigation and over-the-air updates. It takes away most of the setup pain people remember from a few years ago.

Flutter uses Google's Dart language and draws every pixel itself, using its own rendering engine called Impeller. It doesn't use the platform's buttons and lists at all. It draws its own versions of them, which is why Flutter apps look identical on every device and why Flutter is so good at highly custom interfaces.

Side by side

FactorReact Native (with Expo)Flutter
LanguageTypeScript / JavaScriptDart
UI approachNative platform componentsOwn rendering engine, custom widgets
Performance for typical appsExcellentExcellent
Custom animation and graphicsVery goodBest in class
Sharing code with a web appStrong if the web app uses ReactLimited
Hiring poolVery large (JS/TS developers)Smaller, growing
Over-the-air updatesBuilt in with EAS UpdateVia third-party tools such as Shorebird
Native look and feelAutomaticNeeds deliberate design work

What about performance?

A few years ago this was the main reason people chose Flutter. Today both handle the kind of apps most startups build without any trouble: feeds, forms, dashboards, chat, maps, payments, video.

You'll still notice a difference at the edges. Flutter is better for complex custom animation, game-like screens and heavy graphics. React Native is better when you want the app to feel exactly like a normal iOS or Android app, since it's using the real native components.

For a typical product app, we wouldn't let performance decide this.

Hiring is the bigger deal

This one gets overlooked, and it matters more than people expect. TypeScript and React are about as common as it gets in software. That means you can hire for React Native at any level, your web developers can help on the mobile app (and the other way round), and there's a library or a Stack Overflow answer for almost anything.

Dart developers are good and the community is lively, but there are fewer of them. If you're planning to bring development in-house after the first version, that's worth thinking about now.

Sharing code with your website or web app

If you already have a React or Next.js web app, React Native lets you share quite a lot with it: business logic, API code, form validation, state management and types. Some teams share UI components too.

Flutter can build for the web, but it's really meant for app-like experiences. It's not a great fit for marketing sites that need to load fast and rank on Google. Most teams that use Flutter for mobile build their website separately.

Shipping fixes quickly

App store review can take anywhere from a few hours to a couple of days. When you're early and a bug slips through, being able to push a fix straight away is a big help.

React Native apps can send JavaScript updates over the air with EAS Update, without going through a store release. Flutter compiles to native code, so over-the-air updates depend on third-party services like Shorebird. They work, but it's one more vendor.

Both stores limit what you can change this way. Bug fixes and small tweaks are fine. A new feature that changes what the app does should still go through review.

Cost

For the same app, the development cost ends up fairly close. Where it differs:

  • React Native developers are easier to find, which can make hiring quicker and rates a bit lower.
  • If you already have a React web app, reusing code with React Native saves real time.
  • If your design is very custom, Flutter may get you there faster.

How to decide

Run through these four questions:

  1. Do you have a React web app, or plan to build one? If yes, lean React Native.
  2. Is a custom, animated interface the main thing that sells your app? If yes, lean Flutter.
  3. Will you hire your own developers within a year? If yes, lean React Native for the bigger hiring pool.
  4. Should the app look and feel exactly like a standard iOS or Android app? If yes, lean React Native.

If none of these really applies, either will serve you well. Go with whatever your team already knows.

What we use

We build with both. For most startup MVPs we go with React Native and Expo, mainly because of the shared web stack, the hiring pool and over-the-air updates. When the design is the selling point, we use Flutter.

If you're trying to make this call for a specific app, our mobile team can give you a straight recommendation on a short call. It'll be based on your product, not on what we happen to prefer.

Frequently asked questions

Is Flutter faster than React Native in 2026?

For typical product apps, users won't notice a difference. Flutter is still ahead for complex custom animation and graphics, while React Native's New Architecture has closed most of the gap for everyday screens.

Can I switch from React Native to Flutter later?

Only by rewriting the app, because the languages and UI models are completely different. That's why it's worth choosing carefully at the start. Your backend and APIs can stay the same either way.

Do big companies use React Native or Flutter?

Both. React Native is used in apps from Meta, Microsoft and Shopify, among others. Flutter is used by Google and plenty of large companies, especially in finance and e-commerce.

Which is better for an MVP?

For most MVPs, React Native with Expo. Setup is quick, developers are easy to find and you can ship fixes over the air. Go with Flutter if your MVP's main appeal is a distinctive, very visual interface.

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