Flutter vs React Native

Flutter vs react native

Flutter vs React Native

Both Flutter and React Native framework is used to build cross-platform mobile apps.
Now in 2022, the big question is which one is best?
we don’t recommend being selective in choosing the right technology framework — be it native, React Native or Flutter, this article will put some limelight to use a more defined approach instead.


What is Flutter? It is an interface-building tool that uses the Dart programming language. In other words, it’s a Google UI framework.

Flutter targets desktop, mobile, and web platforms from a single codebase and features its own Dart native compiler to create hardware-optimized apps for the ARM architecture.

React Native

What is React Native? It is a Facebook-led native UI development framework, based on React.JS. It’s open-source and was at the peak of its popularity in 2018, React Native GitHub repository was the top second judging by the number of community contributions.

Because React Native and Flutter are the top cross-platform mobile development frameworks that use platform-agnostic native components, we will describe these two in more detail below.

Which is More Powerful and Efficient?

As cross-platform technologies are designed to target several platforms, we’ll compare their performance for desktop, mobile, and web apps separately. Flutter’s programming language is Dart and React Native is written with JavaScript. So, at some point, we’ll benchmark Dart vs. JS against each other and the performance of other frameworks components

Mobile Performance

Our colleagues from The Startup community on Medium shared a decent performance study of native and cross-platform approaches in mobile app development. They ran multiple tests on real Android and iOS smartphones and compared the execution time for Pi-digits calculations implemented with Flutter, React Native, and Native programming languages (Swift/Obj-C for Apple, Java/Kotlin for Android). Check out the unexpected results in the table below.

flutter vs react native
Source: benchmarksgame-team.pages.debian.net/benchmarksgame/fastest/node-dart.html

No doubt, the highest performance in any programming task is the distinctive advantage of native mobile development. However, with cross-platform frameworks, everything isn’t very straightforward. Flutter demonstrated just 9-22% lower performance in memory-intensive tests in comparison to Native. Although in compute-intensive tasks it is 2-6 times slower than Native. React Native showed the worst performance in all the tests. It’s 2-15 times slower than Flutter and 5-21 times slower than Native. Editorial notice: benchmark tests depict only very narrow characteristics of the technology performance. In the completed real-world apps the difference in performance is aligned and isn’t correlating with the deviations in benchmarks. Although, the general trend remains the same: which technology is better in tests usually performs better on live too. To explain this contradictory output, let’s take a look at the architecture and operational principles of both frameworks.

React native vs flutter
React native vs flutter
The execution of the source code on React Native requires a “bridge” from the JavaScript (JS) code to the device’s native environment. This bridge allows these two environments to communicate and exchange data. In a nutshell, the bridge is an interpreter that translates JS code to the device’s native programming language and vice-versa. Unfortunately, the bridge is an additional agent in this toolchain that requires extra time and resources for processing and usually creates a bottle-neck in React Native applications. In contrast to this, Flutter compiles to x86 and ARM native libraries without any additional interlayers. Thus it performs quicker and consumes fewer resources to execute the code. That results in the instant start-up of the application, higher performance, and less load on the device. Moreover, Flutter also has a С++ graphics rendering engine onboard that broadcasts the image directly to the screen. Thanks to this, animations are quicker and smoother with less coding required. This doesn’t mean that React Native isn’t able to process complex algorithms or sophisticated graphics. Flutter simply could do it quicker and more efficiently on mobile devices.

Flutter Interview question
Job-ready flutter course
Find us on FacebookLinkedin

Leave a Reply

Your email address will not be published.