
About ObjectBox
ObjectBox is an open source, lightweight database for mobile and edge apps that keeps data on the device. It is licensed under Apache 2.0, and the site describes it as an edge vector database that can also sync data between devices.
What it does
ObjectBox stores objects directly, so apps do not need to map every record to rows by hand. The site describes fast, small on-device storage that keeps data private on the phone. Data can be synced to other devices, which makes it possible to build apps that keep working without a network connection.
Key features
- On-device object storage
- Fast reads and writes
- Small library footprint
- Sync across devices
- Vector database support
Who it's for
ObjectBox suits mobile app developers who need fast local storage. It is also a good choice for teams building offline-first apps that must work without a network, and for apps that store large amounts of data on the device.
Pricing and good to know
ObjectBox is open source under the Apache 2.0 license. Check the official site for current sync options and licensing before you use it in a commercial product. Test performance on the oldest devices you plan to support, since storage speed differs widely between phones.
Highlights
- Store objects directly on the device
- Read and write data quickly on mobile
- Sync data across devices
- Use vector search for edge data












