Firebase Cloud Messaging vs Realm
| Firebase Cloud Messaging | Realm | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | Android, api, extension, iOS, Web | Android, iOS, Linux, macOS, self-hosted, Windows |
| Free plan | Yes | — |
| Offline mode | Yes | — |
| Data synchronization | bidirectional | — |
| Mobile platforms | iOS and Android | iOS, Android, Xamarin |
| Conflict resolution | automatic | — |
| SDK languages | Apple platforms, Android, Flutter, JavaScript, Unity, C++ | Java, Objective-C, JavaScript, Swift, Xamarin |
Both are listed in Best Mobile Databases. On The Geeks Club, Realm scores higher on our published basis.