Conflict-aware sync for product teams

Keep every app state in agreement.

DataSync gives teams a typed sync layer for offline-first products, collaborative workflows, and multi-device state without rebuilding the same queue twice.

10M+
syncs daily
99.99%
uptime SLA
<50ms
edge latency

Live Mesh

Production sync stream

healthy

Replication lag

last 30 minutes

-18%

Event trail

orders:write34ms
eu-westsynced
profiles:update12ms
us-eastqueued
inventory:merge48ms
ap-southresolved

Conflicts

14

Resolved

100%

Retries

0.03%

Trusted by developers at world-class companies

GitHub
Vercel
Stripe
Linear
Figma
Supabase
Features

The sync layer your product team stops worrying about

DataSync handles the operational parts of distributed state so your team can keep shipping product behavior.

Real-Time Sync

Changes propagate across connected devices without polling loops or stale reads.

Offline Queue

Writes are stored locally, replayed safely, and reconciled when a device comes back online.

Conflict Policies

Choose field-level merge rules, approvals, or last-write fallbacks for each collection.

Edge Replication

Regional replication keeps collaborative apps responsive as traffic moves around the globe.

Security Controls

Scoped keys, encrypted transport, audit trails, and team permissions are built in.

Typed SDKs

Ship with JavaScript, Swift, Kotlin, Flutter, and React Native from the same API model.

Developer Experience

A small API surface for serious sync behavior

Get started with just a few lines of code. Our SDKs handle all the complexity of real-time synchronization, offline support, and conflict resolution.

  • Type-safe APIs with full TypeScript support
  • Intuitive query builder with reactive subscriptions
  • Automatic offline persistence and sync
  • Comprehensive error handling and retry logic
import { DataSync } from '@datasync/sdk'

// Initialize the client
const sync = new DataSync({
  apiKey: process.env.DATASYNC_API_KEY,
  database: 'my-app'
})

// Subscribe to real-time updates
const unsubscribe = sync
  .collection('tasks')
  .where('status', '==', 'active')
  .subscribe((tasks) => {
    console.log('Tasks updated:', tasks)
    renderTasks(tasks)
  })

// Create a new document (syncs automatically)
await sync.collection('tasks').add({
  title: 'Build something amazing',
  status: 'active',
  createdAt: new Date()
})
How it works

From install to production traffic in minutes

Getting started is deliberately plain: connect the SDK, define sync behavior, and observe the stream.

01

Connect

Install the SDK, add your key, and describe your collections with TypeScript types.

02

Sync

Write locally, subscribe to changes, and let DataSync handle delivery and replay.

03

Scale

Move from pilot to production with regional replication, audit logs, and usage controls.

Terminal
$ npm install @datasync/sdk
+ @datasync/sdk@2.4.1
added 1 package in 1.2s
$ npx datasync init
Created datasync.config.ts
Generated type definitions
Ready to sync!
Pricing

Predictable pricing for real product traffic

Start free, scale as you grow. No hidden fees, no surprises.

Starter

Perfect for side projects and experiments

Freeforever
  • 10,000 syncs / month
  • 1 GB storage
  • 2 databases
  • Community support
  • Basic analytics
Get Started
Most Popular

Pro

For growing teams and production apps

$29/ month
  • 1M syncs / month
  • 50 GB storage
  • Unlimited databases
  • Priority support
  • Advanced analytics
  • Custom conflict rules
  • Team collaboration
Start Free Trial

Enterprise

For large-scale deployments

Customcontact us
  • Unlimited syncs
  • Unlimited storage
  • Dedicated infrastructure
  • 24/7 phone support
  • SLA guarantee
  • SSO & SAML
  • On-premise option
  • Custom integrations
Contact Sales

Have questions? Check out our FAQ or contact us.

Testimonials

Trusted by teams shipping collaborative products

Join thousands of developers who've simplified their data sync.

"DataSync cut our development time in half. We went from struggling with real-time sync to having it just work. The offline support is incredible."

SC
Sarah Chen
CTO at Flowbase

"We migrated from Firebase and never looked back. The conflict resolution alone saved us weeks of debugging. Highly recommended for any team building collaborative apps."

MR
Marcus Rodriguez
Lead Engineer at Pixelcraft

"The SDK is beautifully designed. It feels like the API was written by developers who actually use it. Setup took 10 minutes and we were syncing data."

ET
Emma Thompson
Founder at DevTools.io

Ready when you are

Give your product a sync backend that behaves like infrastructure.

Start with the free tier, test the SDK, and bring production traffic over when your team is ready.

No credit card required · Free tier available · Cancel anytime