React Native enables you to build world-class application experiences on native platforms using a consistent(always ​behaving or ​happening in a ​similar, ​especially ​positive, way) developer experience based on JavaScript and React(A JAVASCRIPT LIBRARY FOR BUILDING USER INTERFACES).
The focus of React Native is on developer efficiency across all the platforms you care about — learn once, write anywhere.
Facebook uses React Native in multiple production apps and will continue investing in React Native.