RxDB

7.3easy start · #6 of 31
in Embedded Databases

Free to practise onyes
Free trialnot on record
Well documentedyes
Runs where you workyes

Runs on Android, api, iOS, Linux, Mac, self-hosted, Web, Windows. Paid plans from $99/mo.

RxDB is ranked #6 of 31 in embedded databases on The Geeks Club. It runs on Android, API, iOS, Linux, macOS, Self-hosted, Web, Windows. There is a free plan. Paid plans start at $99/mo.

RxDB plans and pricing

All plans

Free Free forever RxDB core · replication and realtime sync · default storages · up to 13 open collections · community support rxdb.info · 2 Oct 2026

Pro $99/mo annually, unlimited developers OPFS · IndexedDB · SQLite · Filesystem · WebCrypto Encryption · Fulltext Search rxdb.info · 2 Oct 2026

Pro Plus $239/mo annually, unlimited developers Worker and Shared Worker storage · Sharding · Memory-Mapped · optimizers · Fastify/Koa adapters · Sentry-compatible logger rxdb.info · 2 Oct 2026

Enterprise Not published custom commercial license · named engineer · 24-hour first-response SLA · architecture review · priority fixes · source-code access rxdb.info · 2 Oct 2026

Compared on embedded databases

Free plan: Yes
Paid from: $99/mo

Best RxDB alternatives

See all 12

ObjectBox 0 of 4 in the starter kit Lesson 18.0 SQLite 0 of 4 in the starter kit Lesson 27.6 Chroma 0 of 4 in the starter kit Lesson 37.5 Qdrant 0 of 4 in the starter kit Lesson 47.5 LadybugDB 0 of 4 in the starter kit Lesson 57.4 DuckDB UI 0 of 4 in the starter kit Lesson 77.2

The record

Product: RxDB is a NoSQL database for JavaScript that runs directly in an app.
Offline-first: RxDB stores data locally on the client, supports offline operation, and can run entirely without a backend.
Synchronization: Its Sync Engine supports realtime synchronization with backends including RxServer, GraphQL, Firebase, Supabase, MongoDB, NATS, HTTP, CouchDB, WebRTC, Appwrite, Google Drive, and Microsoft OneDrive.
Reactivity: RxDB provides observable realtime queries that update when stored data changes.
Runtimes: RxDB runs in browsers, mobile apps, desktop applications, and servers.
Storage: Documented storage options include LocalStorage, IndexedDB, OPFS, Memory, Node.js Filesystem, SQLite, Expo Filesystem, Dexie.js, MongoDB, DenoKV, and FoundationDB.
Schema: RxDB uses JSON Schema for collections, with schema validation and migration support.
Encryption: The encryption plugin encrypts locally stored documents with a password and works in browsers, React Native, and Node.js.
License: The free tier is under the Apache 2.0 license.
Free limit: The Free tier allows up to 13 open collections in parallel.
Support: Free users receive community support through GitHub and Discord, while Enterprise includes a support SLA with a 24-hour first response.
Production privacy: Deployed applications do not make requests from users to an RxDB server, and the premium plugins contain no tracking code.
Small datasets: The LocalStorage storage is intended for simple browser setups and very small datasets and is not optimized for large data or heavy writes.
Headquarters: Stuttgart, Germany
Price from: $99/mo

Where it ranks on The Geeks Club

Best Embedded Databases in 2026#6 of 31
Best Mobile Databases in 2026#7 of 27

Is RxDB yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote RxDB

Sources

rxdb.info· checked 2 Oct 2026
rxdb.info/quickstart.html· checked 2 Oct 2026
rxdb.info/overview.html· checked 2 Oct 2026
rxdb.info/encryption.html· checked 2 Oct 2026
rxdb.info/premium/· checked 2 Oct 2026