With React Native you write your apps in JavaScript, in a React.js style.
My understanding is that ComponentsKit has you write your iOS apps with ObjC/Swift or whatever, but it gives you a way of structuring your apps that is similar to React.js
My understanding is that ComponentsKit has you write your iOS apps with ObjC/Swift or whatever, but it gives you a way of structuring your apps that is similar to React.js