NativeBase is an open source mobile application development framework that gives you the potential of building applications that run on iOS and Android using a single codebase. NativeBase builds a layer on top of React Native that provides you with basic set of components for mobile application development. The applications stack of components is built using native UI components and because of that, there are no compromises with the User Experience of the applications. Please take a look at nativebase.io/docs/v0.5.7/guide/why-nativebase for more details.