In a mobile app, animations can greatly impact user experience in terms of interactions and engagement. Animations can quickly become one of the key factors that users love engaging with on your mobile app.

While building a React Native app, it is essential to think of user interactions. Animating some of the user actions can help improve user engagement within the app. In this post, we will cover a list of open source animation libraries for React Native that you can use for your next app, and compare them based on functionalities, ease of use, and popularity.

React Native Reanimated

React Native Reanimated, or Reanimated, is a React Native animation library for creating animations and transitions for iOS and Android mobile applications. It greatly streamlines the process of creating smooth and powerful animations by offering full native support and performing animations directly on the UI thread instead of the JavaScript thread.

React Native’s built-in Animated API faces some limitations when it comes to animating and enabling gesture-based interactions. The Reanimated library solves this problem and provides flexibility for adding animations and transitions to in-app interactions.

Reanimated was created and is actively maintained by developers at Software Mansion and Expo. It integrates with the React Native Gesture Handler library for creating tap, pan, and fling gestures.

React Native Reanimated has gone through version updates over the years, with the release of v2 in 2020 and v3 in 2023. While v2 came with some breaking changes, v3 only included a new Shared Element Transition feature. This new addition allows you to animate views between navigation screens, which adds a smooth transition between the elements of different screens. Besides adding new features, the updates to Reanimated also included performance improvements, improved memory usage, and library stability.

Here’s a demo of an animation created using Reanimated:

React Native Shared Element

React Native Shared Element provides a set of native building blocks for performing shared element transitions, and enhancing the building of custom transitions beyond what the core React Native API provides. These primitives are all through native implementation.

React Native Shared Element solves a set of specific problems through its native implementation approach. For example, if you were trying to add heavy transitions like navigation between two screens or even add a modal transition to your app with the React Native Animated API, you could still run into performance issues like frame drops.

This library solves the following problems:

• Flickering
• CPU and GPU interface
• ScrollView clipping
• Shadow transition
• Cross-fade transitions
• Image resizeMode transitions

Moreover, React Native Shared Element has a separate version to support shared transitions between navigators using the React Navigation library called react-navigation-shared-element. It uses createSharedElementStackNavigator, which has a similar API to stackNavigator, which you can use to wrap each route screen in the navigator and detect changes to trigger shared element transitions.

Here is a demonstration of an animation created using React Native Shared Element:

React Spring

React Spring is another physics-based animation library that allows you to create smooth and realistic animations with just a few lines of code. It is a cross-platform library, meaning that it supports multiple platforms like the web, React Native, and more. It can animate HTML, SVG, Native Elements, Three.js, etc.

React Spring provides a wide range of interpolation and easing functions that can further enhance your animations. It supports SSR, is fully written in TypeScript, and is compatible with any UI framework you choose.

To use React Spring in a React library, all you need to do is select the native platform target from the @react-spring package like so: @react-spring/native.

React Spring provides an imperative API, two custom components, and a set of hooks for creating different types of applications. The components (Parallax and Parallax Layer) are only available on web platforms (the browser) and are for creating parallax effects. The hooks include:

• useSpring: For animating elements between two points, a to b
• useSprings: For animating multiple springs
• useScroll: For creating scroll-based animations
• useTransition: For mount and unmount transitions
• useChain: For chaining or queueing multiple animations
• useTrail: For animating multiple springs one after the other
• useInView: For tracking the visibility of elements in the viewport

Explore this in-depth article on React Spring animations to learn more. Here’s an example of an animation created using React Spring:

Conclusion

The libraries featured in this list are either based on personal experience or those which are actively maintained. The goal of these component libraries is to make your development faster and provide a robust way to build apps, ensuring that you don’t have to start from scratch with every new React Native project.

Do you know any other React Native animation libraries you would recommend? Share your suggestions in the comments below and let us know what makes them stand out.

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