Almost every time someone comes to us wanting to build a phone app, we get the same question: should it be React Native or Flutter? Both are good tools used by big companies. The answer depends on your situation — not on what's trending.

What's the Actual Difference?

React Native and Flutter are both ways to build apps for iPhone and Android at the same time, from a single codebase. The alternative is building two completely separate apps — one for each platform — which costs roughly twice as much. Both frameworks let you avoid that.

The main difference is under the hood. Flutter draws everything on screen itself, using its own engine. React Native talks to the phone's built-in parts more directly. In practice, both look and feel like real apps — users can't tell the difference.

Speed and Performance

Flutter is generally faster in benchmarks — measurably so for things like complex animations or games. For the vast majority of apps though — shopping apps, social feeds, booking tools, dashboards — neither framework is going to feel slow to the people using it. The difference just isn't noticeable in normal use.

We've had clients say "I want the fastest one" — which is understandable. But for most apps, picking a framework for raw speed is like picking a car based on its top speed when you're driving in a city. It rarely comes up.

Do You Also Need a Website?

If you're building both a phone app and a website, React Native makes more sense. A lot of the code — the logic, the data, sometimes even pieces of the design — can be shared between both. Less code to write, less to maintain, fewer bugs.

Flutter technically has a web version, but it's not great for websites yet. It works better on TV and desktop apps than it does in a browser. We wouldn't recommend it for web.

How We Actually Decide

Here's the short version of how we think through it with clients:

Is there already a website that needs to share code with the app? React Native. Does the design require very unusual, custom visuals or heavy animation? Flutter. Does performance matter more than almost everything else? Flutter. Is everything else roughly equal? We lean React Native, because it's been around longer and there's a bigger pool of developers who know it.

Neither choice is wrong. The apps that run into trouble aren't the ones that picked the "wrong" tool — they're the ones that kept second-guessing themselves mid-build. Pick one and stick with it.