Gravity comes bundled with everything you need to start sending push notifications - saving you hours of headache.
When a user signs into your app for the first time, they will be prompted to enable push notifications. If they accept, a push token is stored on the server for that user.
Gravity supports multiple devices per user.
Please refer to the Push Notifications section of the Gravity Server documentation to learn about sending push notifications from the server.
Expo comes complete with its own push notification service, which means you can start sending notifications right away without any additional setup. However, if you'd prefer you can incorporate Firebase into your app and send push notifications with Firebase instead.