Async Storage

A persistent, unencrypted, asynchronous key-value storage system for React Native applications.

Async Storage provides a streamlined local database for React Native (iOS, Android, and Web). It manages small-scale data persistence: user settings, authentication tokens, and simple state snapshots. The API uses a promise-based architecture to keep operations off the main thread. While it lacks the advanced indexing of SQLite or Realm, it excels at storing strings and serialized JSON objects. Developers typically rely on it for lightweight tasks (defaulting to a 6MB limit on Android) where schema complexity is unnecessary.

https://react-native-async-storage.github.io/async-storage/