Your phone locks itself
the moment you walk away
Guard Lock watches for the trusted Bluetooth devices you carry — your watch, earbuds, or car — and locks your Android phone automatically the instant they disconnect. No extra taps. No forgotten locks.
Android 8.0+ · No account required
Security that runs in the background
Guard Lock is built to be invisible until the moment it matters.
Trusted device monitoring
Pair the Bluetooth devices you trust — smartwatch, headphones, car stereo — and Guard Lock keeps watch over the connection in the background.
Automatic locking
The instant a trusted device disconnects or goes out of range, your phone locks itself — no need to remember.
Panic Lock
Force-lock your device instantly on demand using device admin controls, for those moments you need to be certain.
Battery-aware scanning
Low-power BLE scanning keeps monitoring accurate without draining your battery throughout the day.
Connection diagnostics
See exactly what Guard Lock is doing with a clear device list and connection history, so nothing is a black box.
Everything stays local
Devices, policies, and logs are stored on-device using encrypted storage — nothing is uploaded anywhere.
How Guard Lock works
Set it up once in under a minute.
Add trusted devices
Scan for nearby Bluetooth devices and mark the ones you always carry as trusted.
Grant permissions
Enable device admin and disable battery optimization so monitoring keeps running reliably.
Go about your day
Guard Lock quietly monitors your trusted connections in a low-power foreground service.
Walk away, stay locked
When your trusted device disconnects, your phone locks automatically — instantly.
Private by design
Guard Lock was built with a simple rule: your data stays on your device.
There are no accounts, no cloud sync, and no analytics tracking your movements.
- Trusted device data and logs stored with EncryptedSharedPreferences
- Structured logs and policies kept in a local Room database
- Bluetooth scanning uses low-power BLE, not location tracking
- Device admin is used only to lock the screen — nothing else
- No third-party ad or tracking SDKs
Guard Lock is almost here
We're putting the finishing touches on the Google Play release. Check back soon.
Coming Soon on Google Play