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The easiest way to store and sync Data inside of your App

RxDB is a NoSQL database for JavaScript that runs directly in your app. With a local-first design, it delivers zero-latency queries even offline, and syncs seamlessly with many backends. With observable queries, your UI updates instantly as data changes.

Build apps that work offline
Sync with any Backend
Observable Realtime Queries
All JavaScript Runtimes Supported

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Get Started For Free

Use RxDB with
these Frameworks

Sync with any Backend

RxDB's easy-to-use Sync Engine powers realtime synchronization between clients and servers. Either use one of our prebuild replication plugins...

OR

...sync with your custom server by implementing only three simple endpoints.

Online is Optional

RxDB adopts the local-first approach by storing data locally on the client and managing continuous synchronization. You can even run your app entirely without a backend.

Keep your app running offline
Run local queries with zero latency
Simplify and speed up development
Reduces backend load and scales better

Official Partner

Trusted by Developers

The Easiest Way to Store Data

04:28

The Easiest Way to Store Data

This solved a problem I've had in Angular for years

03:45

This solved a problem I've had in Angular for years

Say goodbye to REST APIs with RxDB

14:23

Say goodbye to REST APIs with RxDB

Build REAL TIME Applications easily 👩‍💻

00:52

Build REAL TIME Applications easily 👩‍💻

Nuxt Nation 2024: Ben Hong - Embracing Local-First Apps with Nuxt

34:17

Nuxt Nation 2024: Ben Hong - Embracing Local-First Apps with Nuxt

The Easiest Way to Store Data

04:28

The Easiest Way to Store Data

This solved a problem I've had in Angular for years

03:45

This solved a problem I've had in Angular for years

Say goodbye to REST APIs with RxDB

14:23

Say goodbye to REST APIs with RxDB

Build REAL TIME Applications easily 👩‍💻

00:52

Build REAL TIME Applications easily 👩‍💻

Nuxt Nation 2024: Ben Hong - Embracing Local-First Apps with Nuxt

34:17

Nuxt Nation 2024: Ben Hong - Embracing Local-First Apps with Nuxt

The Easiest Way to Store Data

04:28

The Easiest Way to Store Data

This solved a problem I've had in Angular for years

03:45

This solved a problem I've had in Angular for years

Say goodbye to REST APIs with RxDB

14:23

Say goodbye to REST APIs with RxDB

Build REAL TIME Applications easily 👩‍💻

00:52

Build REAL TIME Applications easily 👩‍💻

Nuxt Nation 2024: Ben Hong - Embracing Local-First Apps with Nuxt

34:17

Nuxt Nation 2024: Ben Hong - Embracing Local-First Apps with Nuxt

RxDB Discord

All the Features You'll Ever Need

Conflict Handling

Local Documents

Schema Validation

Used by Thousands Worldwide

We use RxDB because it works across multiple platforms and we need to store of a great deal of data, some users have tens of thousands of documents! RxDB was the only cross-platform, offline-first solution with good enough performance to meet our needs.

Readwise (USA)

We use RxDB for our offline-first inspection software. It ensures accurate data even under poor connectivity, while its single interface for multiple databases streamlines development. RxDB's flexibility also supports easy expansion to more platforms and environments.

SafeEx (Denmark)

We use RxDB in our global offline-first app for technicians. Its robust features and total control ensure reliable performance, even with poor connectivity, resulting in a seamless maintenance solution.

WebWare (Italy)

We rely on RxDB to manage all our data in one place. Our custom store became unwieldy, so we switched to RxDB for schema migrations, real-time replication, conflict resolution, and reactive programming. Its push and pull handlers also integrate smoothly with our existing APIs.

myAgro (Africa)

We provide a mobile app that is used by people in the field to fill in valuable information like inspections, surveys and audits. Our users don't always have access to the internet, building from an Offline-first approach with RxDB allows us to have the data integrity we need without being online.

MoreApp (Germany)

We use RxDB to create applications capable of being used in the most remote areas where Internet access is really a challenge.

ALTGRAS (Guinea)

We use RxDB to provide an offline first, cross platform point of sale system. With RxDB we could create a web-, desktop- and mobile app using the same code base.

WooCommerce POS (Australia)

RxDB is a main component in building offline-ready multichannel apps. It has become our default stack for this kind of apps.

atroo GmbH (Germany)

With RxDB we have built an offline capable Progressive Web Application that is used by our borer operators to report on conditions at the mineface.

Nutrien (Canada)

We use RxDB because it works across multiple platforms and we need to store of a great deal of data, some users have tens of thousands of documents! RxDB was the only cross-platform, offline-first solution with good enough performance to meet our needs.

Readwise (USA)

We use RxDB for our offline-first inspection software. It ensures accurate data even under poor connectivity, while its single interface for multiple databases streamlines development. RxDB's flexibility also supports easy expansion to more platforms and environments.

SafeEx (Denmark)

We use RxDB in our global offline-first app for technicians. Its robust features and total control ensure reliable performance, even with poor connectivity, resulting in a seamless maintenance solution.

WebWare (Italy)

We rely on RxDB to manage all our data in one place. Our custom store became unwieldy, so we switched to RxDB for schema migrations, real-time replication, conflict resolution, and reactive programming. Its push and pull handlers also integrate smoothly with our existing APIs.

myAgro (Africa)

We provide a mobile app that is used by people in the field to fill in valuable information like inspections, surveys and audits. Our users don't always have access to the internet, building from an Offline-first approach with RxDB allows us to have the data integrity we need without being online.

MoreApp (Germany)

We use RxDB to create applications capable of being used in the most remote areas where Internet access is really a challenge.

ALTGRAS (Guinea)

We use RxDB to provide an offline first, cross platform point of sale system. With RxDB we could create a web-, desktop- and mobile app using the same code base.

WooCommerce POS (Australia)

RxDB is a main component in building offline-ready multichannel apps. It has become our default stack for this kind of apps.

atroo GmbH (Germany)

With RxDB we have built an offline capable Progressive Web Application that is used by our borer operators to report on conditions at the mineface.

Nutrien (Canada)

We use RxDB because it works across multiple platforms and we need to store of a great deal of data, some users have tens of thousands of documents! RxDB was the only cross-platform, offline-first solution with good enough performance to meet our needs.

Readwise (USA)

We use RxDB for our offline-first inspection software. It ensures accurate data even under poor connectivity, while its single interface for multiple databases streamlines development. RxDB's flexibility also supports easy expansion to more platforms and environments.

SafeEx (Denmark)

We use RxDB in our global offline-first app for technicians. Its robust features and total control ensure reliable performance, even with poor connectivity, resulting in a seamless maintenance solution.

WebWare (Italy)

We rely on RxDB to manage all our data in one place. Our custom store became unwieldy, so we switched to RxDB for schema migrations, real-time replication, conflict resolution, and reactive programming. Its push and pull handlers also integrate smoothly with our existing APIs.

myAgro (Africa)

We provide a mobile app that is used by people in the field to fill in valuable information like inspections, surveys and audits. Our users don't always have access to the internet, building from an Offline-first approach with RxDB allows us to have the data integrity we need without being online.

MoreApp (Germany)

We use RxDB to create applications capable of being used in the most remote areas where Internet access is really a challenge.

ALTGRAS (Guinea)

We use RxDB to provide an offline first, cross platform point of sale system. With RxDB we could create a web-, desktop- and mobile app using the same code base.

WooCommerce POS (Australia)

RxDB is a main component in building offline-ready multichannel apps. It has become our default stack for this kind of apps.

atroo GmbH (Germany)

With RxDB we have built an offline capable Progressive Web Application that is used by our borer operators to report on conditions at the mineface.

Nutrien (Canada)

RxDB Supabase

Official Partner

Core Concepts

Schema

Storages

Queries

Reactivity

TypeScript

Business Model

RxDB uses JSON Schema, a format widely recognized by developers through tools like OpenAPI or Swagger. Because JSON Schema is so well-established, it integrates seamlessly with existing validators, editors, and development tooling, making schema design both simple and highly flexible.

A minimal RxDB schema might define fields, data types, and indexes in a fully declarative way. For example:

const heroSchema = {
  title: 'hero schema',
  version: 0,
  primaryKey: 'id',
  type: 'object',
  properties: {
    id: {
        type: 'string',
        maxLength: 100
    },
    name: {
        type: 'string'
    },
    power: {
        type: 'string'
    },
    age: {
        type: 'number'
    }
  },
  required: ['id', 'name']
};

Start using RxDB today

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