Private Sync: Sync Across All Your Devices

Keep conversations and settings in sync across your phone, laptop, and browser. Private sync is optional—Caiioo works great offline too.

Why Use Private Sync?

  • Access everywhere — Start a conversation on your phone, continue on your laptop
  • No copy-paste — Settings and skills sync automatically
  • Secure — Everything is encrypted before it leaves your device
  • Simple — Just toggle it on and forget about it

Turn It On

  1. Go to Settings > Private Sync
  2. Click "Enable Private Sync"
  3. Sign in with your Google account
  4. Create an encryption passphrase — you'll set this once, and it's what derives your encryption key. Caiioo never sees it.
  5. Done—syncing starts automatically

Your data is encrypted with AES-256-GCM before it ever leaves your device. Caiioo servers never see your conversations or settings—just encrypted blobs in your Google Drive.

Your passphrase is remembered on each device. Once you've entered it, it's stored on that device — encrypted at rest — so sync resumes automatically when the app launches; you won't be asked again on every restart. You still enter it once on each new device (it never syncs or leaves the device), and turning sync off or signing out of your account removes the stored copy.

What Syncs

  • Conversations — All your chat threads and message history
  • Settings — Theme, font size, API keys, model preferences
  • Profiles — Your profile and custom variables
  • Skills — Your custom prompts and templates
  • Modes — Custom modes you've created
  • MCP servers — Your configured tool integrations
  • Reminders — Scheduled triggers
  • Learned pages — Sites you've taught Caiioo about

Device-specific settings (local voice models, desktop app config) stay on the device and don't sync.

How It Works

Everything happens in the background:

  1. You make a change on your phone (new conversation, new skill, etc.)
  2. Caiioo encrypts it with the key derived from your passphrase
  3. It uploads to your Google Drive
  4. Your other devices check for changes every few seconds and download them
  5. You see the change within seconds

The encryption key never leaves your device. Only you (with your passphrase) can decrypt your data.

Use Caiioo in a Browser on Another Device

This is separate from private sync. Two ways to open Caiioo in a browser on another device while everything keeps running on your main computer:

Remote access via the private relay (works anywhere)

  1. On your main device, go to Settings > Connections and turn on Private Relay
  2. Copy the address that appears — relay.caiioo.ai/app
  3. Open it in any browser on the other device and sign in with the same account
  4. No pairing code needed; the connection is end-to-end encrypted and reaches only your own instance

Caiioo Bridge pairing (same local network, with a code)

  1. Go to Settings > Connections > Caiioo Bridge > Pair a device
  2. A 6-character code appears — valid for 5 minutes, single-use
  3. Open the same URL on the other device and enter the code
  4. Rate limit: 10 attempts per IP per minute
  5. Server restart re-pairs cleanly

Note: The desktop app stays on this computer by default; LAN access is opt-in via Settings > Connections. Tokens are only handed out to localhost requests even when LAN access is enabled.

Troubleshooting

Sync not working?

  • Check your Google account connection in Settings > Private Sync
  • If your Google token expired, click "Reconnect Google"
  • Make sure you have space in your Google Drive
  • Make sure your passphrase matches what you set on the other device
  • Try toggling sync off and back on

Forgot your passphrase? There's no recovery — the passphrase never leaves your device, so Caiioo can't reset it. If you've lost it, disable sync on one device, use Delete ALL Drive Data (in Settings > Private Sync) to clear the encrypted cloud copy, then re-enable with a new passphrase.

Want to turn it off? Go to Settings > Private Sync and click "Disable Private Sync". Your data stays on your device, but won't sync to other devices anymore. This also removes the stored passphrase from the device. To remove the encrypted backup from your Google Drive as well, use Delete ALL Drive Data.

Privacy

See Privacy & Data for full details on how private sync data is encrypted and protected.

This guide is maintained by the Caiioo team using Slate, our built-in editor.