How to Install React Native on MAC step by step. React Native has fast become one of the hottest frameworks for building cross platform mobile apps. Based on JavaScript and Facebook’s React Library it focuses on performance and tight integration with the native platforms supports. With Facebook invested in the framework and React’s learn once, write anywhere philosophy, React has a bright future.React native is now doing what is impossible few years back but now its a complete game changer technique, which would soon change the development arena and any one can developer both android and iOS apps using single language.