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
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.
API
network failure handling
state management
retries
cache invalidation
optimistic updates
loading state
Synced in background
Backend DATABASE, meet SQLite
How PowerSync works
On the backend
Backend database
1
The PowerSync Service connects to your source database.
PowerSync is non-invasive to your backend database, with minimal permissions required.
Learn more
Change stream
2
The PowerSync Service continuously replicates data by tracking changes in the source database.
PowerSync Service
Partial sync
3
Data is dynamically partitioned with Sync Streams you define, giving each user just the data they need.
Real-time streaming
4
Updates are streamed to clients in real-time.
The PowerSync Service elastically scales horizontally to large numbers of concurrent clients.
Learn more
In your client app
PowerSync Client SDK
In-app SQLite
App data tables
Upload queue
5
6
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)
Implement sync today
