React Native Performance: Tips For Improving Your App’s Performance
By: Utsav Prajapati
Tags: Mobile App Development, React Native Development, React Native App, Cross Platform, React Native

Facing issues with your React Native App Performance?

React Native Performance: Tips For Improving Your App’s Performance

Read this article till the end and know the tips to improve React Native performance

React Native is one of the most preferred cross-platform frameworks worldwide, especially for those who want to develop their mobile application for multiple platforms. Plus, It has an active community, coming up with new improvements day by day to build mobile applications faster and high-performing. It makes developer’s work easy.

But sometimes, your react native application becomes slow. Why? Because there could be many reasons affecting React Native performance like using third-party libraries, tabs, navigation, etc. in your app. A business owner needs to take care of such significant issues.

Worried? Are you facing the same issues and looking for suitable and meaningful answers? If yes, then you have landed on the right article because I will be sharing some of the React Native performance tips, which I came to know from my developer friend so that you can also improve your React Native app performance.

So, Let me start with the same!

Improve React Native App launch time

The first tip I would like to share with you is that you should improve your React Native app launch time because if an app launch time is slow, it’s definitely going to upset your app users, right? So, better you focus on improving app launch time.

How can you improve it? Well, you don’t use object finalizers and run major components on the main thread because it causes error messages like “ Your app has run out of memory,” though you have a sufficient amount left. So, avoid using it!

2. Avoid memory leaks

Memory leaks can happen because of several reasons. Most of the time, extra processes running in the background or scrolling down up to the 3rd or 4th page can start impacting the RAM of your mobile phone which ultimately slows your down React Native app performance

To avoid such memory leaks, you should use FlatList, SectionList, or VirtualList instead of using Listview. It makes your scrolling feature smooth and gives a better experience to users.

3. Screen orientation

If you have an android mobile app, I would recommend you to use the React-Native-orientation feature. It helps you make your application very easy while changing portrait mode to landscape to play games, watch movies, or take photos. It gives your mobile users a very smooth experience in their mobile apps.

4. Image optimization

Image optimization must be done if you get multiple error messages or sub-par performance in your react native application. Images should be responsive.

For image optimization, don’t use large images instead use small images

Don’t use PNG images; instead, us JPG images to reduce the memory footprint and does not lead to a memory leak.

Convert your images into WebP format because it supports lossy and lossless compression techniques to compress the size of the images and increase the speed of image loading time.

5. Avoid unnecessary re-rendering

Don’t re-render the components of your React Native app. Doing so will affect your React Native performance. Instead, use the shouldComponentUpdate function, which lets you render when necessary.

6. Avoid using necessary features

One of the main advice from the React Native developers. Don’t use unnecessary features in your React native apps. Having excessive data, tabs, navigation, animations can only cause the app launch time and upset your user. Moreover, build your app and it designs suitable for multiple devices.

7. Reduce load on the bridge

For better React Native performance and smoother communication, reduce the bridge's load by utilizing the open-source libraries. Plus, avoid the act of moving components on the main thread as it connects with the native side for heavy use of message queues.

8. Reduce application size

For better React Native performance, you should use necessary components and optimize those components accordingly to reduce the graphics' size. Don’t use third-party libraries or native components because it increases the size of the application. If the application's size is small, it becomes easy for the device to perform your React Native app better.

9. Avoid multi-threading and apply one thread at a time

If you face crashes or your React Native app performance has gone very slow, you should avoid multi-threading and render only one service because React Native does not support multi-threading.

So, these are the React Native performance tips I can share with you guys. There could be major issues affecting React Native app performance, and have superb solutions to overcome those you might have experienced. If you did, please mention it in the comment box. It will be good for the readers, and they can also improve their React Native app performance.

If you think that you are facing Major React Native app performance and want to hire React Native developer or a team, I would recommend you hire a team that works on your project as if they are an in-house team.

Additional Information:

2. React Native Bridge for iOS and Android