React Native is a framework for building apps that work on both Android and iOS. It allows you to create real native apps using JavaScript and React. This differs from frameworks like Cordova, where you use HTML to build the UI, which will then just be displayed within the device’s integrated mobile browser (WebView). React Native has built-in components which are compiled to native UI components, while your JavaScript code is executed through a virtual machine. This makes React Native more performant than Cordova.

Another advantage of React Native is its ability to access native device features. There are many plugins that you can use to access native device features, such as the camera and various device sensors. If you’re in need of a platform-specific feature that hasn’t been implemented yet, you can also build your own native modules — although that will require you to have considerable knowledge of the native platform you want to support (Java or Kotlin for Android, and Objective C or Swift for iOS).

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If you’re coming here and you’re new to React, you might be wondering what it is. React is a JavaScript library for the Web for building user interfaces. If you’re familiar with MVC, it’s basically the View in MVC. React’s main purpose is to allow developers to build reusable UI components. Examples of these components include buttons, sliders, and cards. React Native took the idea of building reusable UI components and brought it into mobile app development.

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