Revitalizing React Native to Boost App Performance in Unconventional Ways!

Revitalizing React Native

React Native is an open-source framework that Facebook developed to enable developers create mobile applications for both iOS and Android platforms using a single codebase. The framework is present on top of React, a JavaScript library for building user interfaces, and provides a way to create native-like mobile apps using familiar web development technologies.

React Native apps are built using a combination of JavaScript and native components, which allows them to take advantage of the performance benefits of native apps while also providing the flexibility and ease of development associated with web apps. The framework uses a declarative programming model, which means that developers specify what the app should look like and how it should behave, rather than explicitly defining how to accomplish those goals.

One of the key advantages of React Native is that it allows developers to build apps for both iOS and Android using a single codebase. This can significantly reduce development time and costs, as developers only need to write and maintain one codebase instead of separate ones for each platform.

React Native also provides access to a large and active developer community, which has created a wealth of third-party libraries, tools, and resources that can be used to speed up development and improve app quality. This includes libraries for common tasks such as navigation, state management, and data storage, as well as tools for debugging and testing.

Overall, React Native has become a popular choice for mobile app development due to its ease of use, flexibility, and ability to create high-quality native-like apps for both iOS and Android platforms using a single codebase.

Cross-platform app developers recommend React Native

It is the most widely used framework for flexibility and agility. This framework offers more native-like functionality but uses inherent features to make top app development company valuable and attractive.

This application framework has its limitations, particularly in terms of performance. For example, this platform does not support animation or allow parallel processing. This can slow down the performance and cause problems with the user interface.

The community continues to improve the framework to support various functions. However, the apps can be hampered by too many processes, despite all the inputs.

Is this the end? But not really! This blog will provide insight into React Native app development company and React Native application.

Top Reasons to Use a Slow React Native Application

When the same task is repeated, it can impact the application’s performance. It can also be affected if the components used are too large for the application and must be rendered frequently. We will now look at why your React Native app slows down.

  • If a variable value changes, the fundamental component will be re-rendered. This can slow down your app. It increases the requirement for frame rates which, in turn, decreases app speed.
  • Caching the component frequently can cause it to be added to your app’s memory. 
  • You can slow down your application if you don’t use pure components for all static content.
  • You can affect the page’s speed by loading large data sets or uploading all members (regardless of whether they are required).
  • Finally, fetching all data for a page or element can increase loading times and decrease performance.

React Native architecture

This is something we are excited about and should resolve many of the problems discussed here. This article will focus on the existing/previous architecture.

React Native works single-threaded by sending asynchronous JSON updates across the “Bridge.” This bus connects the Native layer, which handles UI events and updates the UI and the JavaScript layer. The JavaScript layer executes React Native bundled JS and performs business logic. Although the JS layer can spawn custom modules, it keeps the main UI thread running until all the work is completed.

Let’s now look at the principal culprits for our performance problems and how we solved them.

Re-rendering components are not necessary

React/React Native or Redux allows you to build powerful apps. However, it is easy to make slow apps because of excessive re-rendering . 

Lazy loading

Webpack is a tool that bundles React apps’ JS files. Our web app required that our webpack support code splitting. This allows us to serve more complex bundles as needed, known as “lazy loading.”

Optimize your Images

Caching can help with re-rendering, but you should ensure that your app launches on time. In addition, optimizing your images will improve app performance. If you have too many images in your app, it can take up a lot of memory. To avoid this, you can increase the resolution or adjust the size of the app.

  • When developing an app solution, always use the PNG format.
  • The WEBP format can reduce image sizes for both Android and iOS platforms.

Optimize the React Native Code

This code will ensure that you save time and memory when rendering. It is standard practice to optimize the code and help deliver suitable applications. Pure components for Text would be an excellent choice to avoid overriding the principles and affecting performance.

No Arrow Works

You’ve probably been a React Developer for some time, and you’re familiar with how arrow functions can lead to re-renders that waste memory. These callbacks can lead to rendering views.Each render creates another instance of the same process. It can slow down speed, agility or performance.


Mobile devices must perform quickly. It is often difficult to choose between rapid iteration to validate an idea or doing more work to prepare for production. Many factors can affect performance, including console statements and animations, large-sized images, or heavy computations. Therefore, it is crucial to find the source of memory leaks and poor performance and then fix them. Connect with us to know more about React Native Mobile apps.

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