Well done! In this lesson, we covered some basic concepts from Expo and React Native:

• React Native is a library that uses React for mobile app development to create performant apps with JavaScript.
• Expo is a platform for universal React apps that contains React Native and helps you iterate fast, without any native platform knowledge.
• Components in React Native have a native component counterpart that is rendered on the native platform.
• Expo and React Native runs your React JavaScript in the actual app, in a different thread from the UI to keep your app running smoothly.
• Just like React, Expo and React Native uses the entry point of your app to render it on different native platforms.
• Because different native platforms aren’t identical, some components behave differently on some platforms.