Realm Sync (in beta) is the out-of-the-box data synchronization service that keeps data in-sync between devices, users, and your backend, all in real-time.



Use Sync to backup user data, build collaborative features, and keep data up to date whenever devices are online - without worrying about conflict resolution or networking code. Powered by the Realm Mobile Database on the client-side and MongoDB Atlas on the backend, Realm is optimized for offline use and scales with you. Building a great app has never been easier.