v0.1 — Windows available now

Stop uploading your files
to someone else's cloud.

Chronosity syncs your folders across all your devices over your local Wi-Fi. Instant, encrypted, offline-first — and yours forever for a one-time payment.

Buy Lifetime — $10See how it works
Mutual TLS encrypted
LAN-only, no cloud
Instant file sync
Chronosity
Browse
Devices
Activity
Guide
Settings
Synced Folders
Documents
2,847 files
✓ Synced
Projects
5,120 files
⟳ Syncing
Photos
9,403 files
✓ Synced

Everything you need

Built for people who want control

Chronosity covers the full sync lifecycle — discovery, pairing, transfer, conflicts — with no configuration required.

LAN-only sync

Files travel directly between your machines. They never leave your network or touch any server.

Mutual TLS encryption

Every connection is authenticated with Ed25519 certificates. Unknown devices are rejected without exception.

Multiple sync folders

Sync Documents, Projects, Photos — anything. Control which devices are part of each folder independently.

Always reconnects

Sleep, wake, Wi-Fi drops — Chronosity picks up exactly where it left off. No manual intervention.

Non-blocking conflicts

Simultaneous offline edits auto-resolve: newest file wins, loser is saved as a .conflict copy. No modal prompts ever.

Clean dashboard

Browse files, check sync status, manage pairings, and view the activity feed — all in one polished interface.

Setup in minutes

How it works

No accounts, no cloud credentials, no configuration files. Pair devices once and forget.

01

Install on each device

Download the installer for Windows, macOS, or Linux. It installs in seconds and creates a unique encrypted identity for that machine.

02

Add folders and pair devices

Pick the folders you want to sync. On the Devices tab, scan the QR code on your other machine to pair them. One time, ever.

03

Just use your computer normally

Edit, create, delete — Chronosity watches for changes and syncs them automatically in the background. No button to press.

Pricing

One price. Yours forever.

No subscription. No per-device fees. Pay once, use on all your personal machines.

Lifetime License

$10one-time
Early-bird — 9,999 of 10,000 spots left

Everything included

  • Windows installer (macOS & Linux coming soon)
  • All future updates included
  • Sync unlimited folders
  • Pair unlimited personal devices
  • No subscription, no renewal
  • 50% affiliate program access

Secured by Stripe. Instant download after payment.

Affiliate Program

Share it. Earn 50%.

Every customer gets a personal referral link. When someone buys through your link, you earn exactly half — no catch.

Instant referral link

After your purchase, visit your account page to get your unique link. Share it anywhere.

50/50, every time

No tiers, no thresholds, no MLM nonsense. Every referred sale splits 50/50 to your Stripe account.

One flat level

Your referrals earn you 50%. Their referrals earn them 50%. No pyramid, no pooling, no limits.

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