The command line tool of React native allows mobile applications for easy testing with no configuration on a mobile phone. The process starts by scanning a QR code and the mobile app will open an expo API on the mobile device. There are multiple successful apps are available in the app store developed by marketplace react native agency. The success stories of react native are Amazon prime, Facebook, Airbnb, and Tesla. The react native cli also works the same as expo-cli however it has some extra advantages and the way of approach is entirely different. The mobile applications that are integrated with react native cli offer multiple options and it also enables us to develop native modules from scratch even from our own mobile application. The language is very flexible so that without any ejection you can make different native modules. However, from a single code, you can develop an app for multiple platforms but the process is entirely different.