React Native

React & React Native allows developers to create large web and mobile applications that can change data, without reloading the page. The main purpose of React is to be fast, scalable, and simple. It works only on user interfaces in the application. This corresponds to the view in the MVC template.
While React Native is great for mobile apps. It provides a slick, smooth and responsive user interface, while significantly reducing load time. It’s also much faster and cheaper to build apps in React Native as opposed to building native ones, without the need to compromise on quality and functionality.

The important difference between React and React Native is that the latter uses native components instead of web components to create the user interface, along with JSX — a syntax that is used to embed XML with JavaScript. This basically means that you can write mobile apps similar to how you would write web apps.

React Batter then angular?
Both Angular and React have component-based architecture, which means they have cohesive, reusable and modular components. But, the difference comes at the point of tech stack. React uses JavaScript while Angular goes with Typescript for web development which is more compact and error-free.

Speed Test
Due to virtual DOM, ReactJS apps perform faster than AngularJS apps of the same size. However, newer versions of Angular are slightly faster compared to React and Redux, according to Jacek Schae’s research at freeCodeCamp.org.