Easily build apps with React Native
Expo lets web developers build truly native apps that work across both iOS and Android by writing them once in just JavaScript. Expo is open source, free and uses React Native.
Mobile apps
Desktop XDE
Exp for CLI
Exp is our terminal program that lets you start building Expo projects with a few commands.
npm install exp --global
exp init your-project-name
exp startPlay with React Native
With Expo Snack you can try your ideas online, then publish and share them with anyone, anytime.
Try Expo Snack
Create your first SnackTest your mobile code on the web
Write your code in the browser. For every time you hit Save, a new link is created so you can share your project with others.
Drag and drop components
New to React? Drag our pre-written components into the web editor and learn how they work without writing a line of code.
Embed your code
Made something you’re proud of? Embed it in a website to show it off or use it in documentation to demonstrate how it works.
What our users are saying
“I am so impressed with @expo_io - really makes developing react native apps a breeze. #reactjs #reactnative”
Web Developer
“In complete awe of the incredible tools @expo_io as built. If you're working in React Native, use these tools. 👏”
Senior Developer @ProctorU
“impressive! it takes me 7 minutes to upgrade my app, including 6min npm install. Another rn app takes me one day. Ty.”
Developer @bamlab
“Super impressed with @expo_io - maybe the best way to build react native apps 🔥”
Designer @netflix
“Seriously, here are the steps:
1. Download the @expo_io app
2. Open a repl.it (like this https://repl.it/H0Qp/899 )
3. Scan the QR code
DONE!”
“Messing around with @expo_io - amazing way to get started with React Native!”
Front-end Engineer @ainsights
“Expo is the best piece of new technology out right now. EXPO IS THE BEST PIECE OF NEW TECHNOLOGY OUT RIGHT NOW.”
Director of Open Source @FormidableLabs
“My goto #reactnative dev toolkit is @expo_io. Makes building/testing/deploying so much easier and fun! #recommend #js #React”
VP of Data Engineering @BlackRock
“Well this blew my mind: https://snack.expo.io/”
VP of Engineering @slack
Need help?
The best way to get help with your Expo project and React Native is to join the community forums or Slack.