How is React dif­fer­ent from React Native?

The sim­ple dif­fer­ence is React Native a col­lect­ed frame­work that helps build built-in mobile apps using the Reach Library where­as Reac­tJS is a part of the JavaScript library and is pre­cise­ly used to cre­ate UI inter­faces on the net.
Hence devel­op­ers who have worked with React will find it amaz­ing­ly easy to build built-in mobile apps on both the plat­forms Android and iOS sim­ply migrat­ing to React Native development.
Note: All they need is to under­stand the dif­fer­ence and know the right way to use them.