A mobile database for Android that replaces SQLite and ORMs with a fast, object-oriented, and sync-ready data layer.
Realm Java is a mobile database for Android that replaces SQLite and traditional ORMs. It stores data as live objects, provides a simple query API, and includes features like thread safety, encryption, and optional real-time synchronization with a cloud backend. It solves the complexity and performance issues often associated with mobile data persistence.
Android developers building applications that require efficient local data storage, real-time synchronization, or a simpler alternative to SQLite and ORM libraries.
Developers choose Realm Java for its high performance, intuitive object-oriented API, and built-in synchronization capabilities, which streamline mobile data management and reduce boilerplate code compared to traditional solutions.
Realm is a mobile database: a replacement for SQLite & ORMs
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Built specifically for mobile devices, Realm outperforms raw SQLite on common operations, as stated in the README, offering faster data access for Android apps.
Data is exposed as live objects, eliminating complex ORM layers and reducing boilerplate code, making data persistence intuitive and quick to implement.
Includes thread safety, encryption, and relationships out of the box, providing robust data management without additional libraries or setup.
Supports Device Sync for keeping data in sync across users and devices via MongoDB Atlas, though this feature is now deprecated for future use.
Atlas Device Sync and SDKs are deprecated, making Realm Java unsuitable for new projects relying on cloud synchronization and casting doubt on long-term support.
Confined to Android platforms, unlike Realm Kotlin which supports Kotlin Multiplatform, restricting its use in cross-platform development scenarios.
Building from source requires JDK 8, Android Studio, CMake, NDK, and other tools, with the README noting it can take over an hour, adding development overhead.
The README actively recommends Realm Kotlin for new projects, indicating that Realm Java may not see significant future updates or feature additions.