Flutter and React Native both let you build Android and iOS apps from one codebase. Both are mature, widely used and backed by large companies. The right choice depends less on which is "better" and more on your team, your product and your plans. Here is a balanced comparison.
The basics
- Flutter is made by Google. It uses the Dart language and draws its own interface with a rendering engine, so it looks the same on every device.
- React Native is made by Meta. It uses JavaScript or TypeScript and React, and renders real native interface components.
Side by side
Language and learning curve
- Flutter: Dart, which is easy to learn but less common than JavaScript.
- React Native: JavaScript and TypeScript, which many web developers already know.
Look and feel
- Flutter: very consistent design across platforms, with great control over custom visuals and animation.
- React Native: feels native by using platform components, and follows each platform's conventions more closely out of the box.
Performance
- Both can deliver smooth performance for most business apps. Flutter often shines in animation-heavy interfaces, and React Native performs well for typical apps when built carefully. Performance depends heavily on how the app is written.
Ecosystem and libraries
- React Native benefits from the huge npm and React ecosystem.
- Flutter has a strong package ecosystem too, though some niche native integrations may need custom work in either framework.
Web and desktop
- Flutter supports web and desktop from the same code, with trade-offs for content-heavy websites.
- React Native is mainly for mobile, though React code and skills transfer well to web projects such as Next.js.
Hiring and team
- React Native: easier if you already have React or JavaScript developers.
- Flutter: a good choice if you are starting a mobile-first team and are happy to train or hire Dart specialists.
How to choose
Choose React Native if
- Your team already works in React or TypeScript
- You want to share logic with a web app
- You prefer a more native look by default
- You need a large pool of JavaScript developers
Choose Flutter if
- You want pixel-perfect, highly branded interfaces
- Your product is animation-rich or design-led
- You are building a new mobile team without a React background
- You may target desktop or embedded screens too
Questions to ask first
- Which developers do we have or can easily hire?
- How custom is our interface?
- Do we also need a web app, and could we share code?
- Which device features do we need, such as Bluetooth, background location or biometrics, and are good libraries available?
- How long must we maintain it?
Don't forget the alternatives
- A PWA can be enough for many business apps.
- Fully native development still suits apps that need the deepest platform features or the highest performance.
Our approach
We choose based on your team, timeline and product, not on trends. If you are unsure, we can build a small proof of concept in each to test your hardest feature. Contact KalzTech to discuss your app.
Frequently asked questions
Is Flutter faster than React Native?+
Both can deliver smooth performance for most business apps. Flutter is often praised for animation-heavy interfaces, but results depend heavily on how the app is built.
Which is better if my team already knows React?+
React Native is usually the more natural choice, since your developers can reuse their JavaScript, TypeScript and React skills and may share logic with a web app.
Can I use either framework for web as well?+
Flutter supports web and desktop from the same code, with trade-offs for content-heavy sites. React Native is mainly for mobile, though React skills transfer well to web projects.
Have a project in mind?
Tell us what you're building and we'll reply within one business day.
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