Runs on Expo. Import into expo.io or run locally if you have Expo set up already. See the live demo here
When you're ready to see everything that Expo provides (or if you want to use your own editor) you can Download your project and use it with expo-cli.
All projects created in Snack are publicly available, so you can easily share the link to this project via link, or embed it on a web page with the <> button.
If you're having problems, you can tweet to us @expo or ask in our forums.
Snack is Open Source. You can find the code on the GitHub repo.