Escape the network tarpit

Automatically sync your backend database with in-app SQLite.
Avoid the complexities of using APIs to move app state over the network.

Backend Database

In-app SQLite

Create a free Cloud account Self-host PowerSync

PowerSync dinosaur mascot in the page header

Connects to these backend databases

Client SDKs available for these frameworks

SYNC MADE SIMPLE

What is PowerSync?

PowerSync is a sync engine that consists of two components: a service that enables high-scalability partial data syncing and a set of client SDKs that manage client-side persistence, consistency, reactivity and syncing write operations back.

Backend
database

PowerSync
Service

Backend API

PowerSync SDK

In-app
SQLite

auto-synced

real-time

reactive

Server-side

State transfer managed for you

Client-side

Fast, reactive, local-first apps

BRING YOUR OWN backend, sync with SQLite

A sync engine built to use powerful open tech

Connect the most capable open database technologies: Postgres, MySQL, MongoDB or SQL Server on the backend and SQLite on the client-side.
‍
PowerSync itself is also open-source and source-available.

The Power of SQLite on the Client-Side

In-app SQLite

Transparent

Easy to debug

Extensible

Many extensions available

ORM Support

Works with popular ORMs

Versatile

Works well with both document data (with strong JSON support) and relational data

PowerSync SDK adds

Bi-directional automatic partial syncing

Real-time reactivity
with live queries

Painless schema
evolution

Illustration of a mobile app mockup with dinosaur characters

PowerSync dinosaur mascot next to a phone

SYNC ENGINES ENABLE INSTANTLY-RESPONSIVE USER EXPERIENCES

Today’s best apps use sync

Syncing apps provide an unmatched user experience: app interactions are instant, data updates fan out to all users in real-time, and apps are always available — even while offline.

AVOID GETTING BOGGED DOWN IN STATE MANAGEMENT

Make app dev more fun

Sync engines change the way data flows between client and server, taking the network off the user interaction path and cutting complexity.

Stop spending energy on micromanaging data and network calls, and let the sync engine take care of state transfer and state management for you.

Backend

API

Network tarpit

network failure handling

state management

retries

cache invalidation

optimistic updates

loading state

Bliss of data availability

Backend

Synced in background

In-app SQLite

Backend DATABASE, meet SQLite

How PowerSync works

On the backend

Backend database

The PowerSync Service connects to your source database.

PowerSync is non-invasive to your backend database, with minimal permissions required.

Learn more

Change stream

The PowerSync Service continuously replicates data by tracking changes in the source database.

PowerSync Service

Partial sync

Data is dynamically partitioned with Sync Streams you define, giving each user just the data they need.

Real-time streaming

Updates are streamed to clients in real-time.

The PowerSync Service elastically scales horizontally to large numbers of concurrent clients.

In your client app

PowerSync Client SDK

In-app SQLite

App data tables

Upload queue

The PowerSync client SDK keeps an in-app SQLite database updated, enabling full offline-first functionality.

PowerSync uses JWTs for authentication.

Learn more

Writes are applied locally, and queued for upload to your backend API.

You have full control over logic for applying writes to your backend database.

Learn more

On the backend

Backend
API

Live demo app

React Multi-Client Demo App (PowerSync + Supabase)

Launch demo app View on GitHub

Implement sync today

PowerSync Cloud

Create a free Cloud account

Self-hosted PowerSync

Self-host PowerSync

Join thousands of developers using PowerSync

“PowerSync is really bulletproof — every single kind of interaction that you might have with the data, it's got covered.”

Tyler Shukert

Supabase

“Combining Riverpod, Drift, and PowerSync creates a powerful stack that makes local-first development approachable. You can focus on building features rather than wrestling with complex sync logic.”

Dinko Marinac

Dinko Marinac's Blog

"Been playing with PowerSync recently - it's amazing and straightfoward after you get an understanding of their architecture and min concepts which is not that hard. Also fully open source and you can self-host. It's in its early days but team on discord is extremely helpful."

Bhodan Khodakivskyi

fomr.io

"It's been a long-time dream of mine to eliminate all client state management with queries to a local DB. This is probably the closest thing I've seen to that vision."

Ev Haus

ZenHub

"As a developer, this feels like a game-changer: I get incredibly robust data sync with LESS code."

Carl Kritzinger

Intuitably

"I'm using @powersync_ to sync data to sqlite wasm in the browser. Magic."

Zane Thomas

"The number of people I talk to about PowerSync on a daily basis 😂 It reminds me of the advertising I used to do for Glassy, so much so that people would ask me if I'd invested in it."

Steve Nosse

BeFit

"The main reason we chose PowerSync is that it perfectly fits our need for an offline-first architecture. Before discovering it, we hadn’t come across any other solutions that offered a robust offline-first sync option."

Andy Geers

PrayerMate

"PowerSync makes it easy to set up local-first without messing up the architecture of the rest of your system."

Simon Grimm

Galaxies.dev

"Smooth cross-platform syncing feels like magic on @orakemu. Works great offline too. Thanks to @powersync_"

Yorgo Hoebeke

Orakemu

"I built recall.plus offline-first with @powersync_ - game changer from a UX perspective as the latency between user actions and the local db is almost non-existent."

Martin Dyz

recall.plus

"Lately, I’ve been working on a project that combines Supabase, PowerSync, and Flutter. The results so far? Absolutely game-changing! This stack makes it so much easier to handle offline-first functionality without overcomplicating the architecture."

Álvaro Carillo Rumpel

Mobile Engineer

“Integrated @powersync_ into an experimental branch of @HabitKit. Setup was pretty easy and fast. Really love the developer experience and I'm amazed how good it works 🤩”

Sebastian Röhl

HabitKit

"Building with a sync engine like @powersync_ means I get instant reactivity for free, without having to write repetitive boilerplate code to manage websockets and API endpoints."

George Jose

Titan Gym App

"Finally, my offline first app with @supabase + @powersync_ is live! I used to use @realm and switched to @powersync_ this time, so far so good! Excited to see how will be on production 💪"