About this app

Very secure Knock Lock App where most of them won't even know how it works and unlocks the screen lock. The reason is, there are invisible 4 blocks covering all the sides of the screen and to secure it, you have to create a pattern knock to Phone Lock App. As it’s invisible, others won't even know how to unlock it. Kids and intruders will wonder how the mobile gets unlocked. Its new and innovative way of securing your mobile Phone Lock Screen.

Knock Lock Screen - Applock is the new way of locking devices.

All you need to do is tap Knock Knock on the screen and unlock your device. MAGIC! No one able to guess what you did to open your lock screen because its fully INVISIBLE.

✿✿✿✿✿✿✿✿✿✿ Available Lock Type ✿✿✿✿✿✿✿✿✿✿

1. Knock Lock
2. Pattern Lock
3. Time password lock


✿✿✿✿✿✿✿✿✿✿ Features ✿✿✿✿✿✿✿✿✿✿

1. Prevent Unauthorized Access.
2. You can choose to turn off animation.
3. Helps preventing accidental calling.
4. Prevents others from using your device.
5. Superbly rich graphics.
6. Consume less memory and battery, Simple and Clean device.
7. 100% safe and secure.
8. more secure lock screen with this application.
9. Unlock vibration enable/disable.
10. Unlock sound enable/disable.
11. Highly secure lock screens.
12. Choice to set knock position on screen.
13. You may have a more secure lock screen with the application.
14. You can select between 3-8 to knock the key.
15. Simulation of real home door.
16. Consume less memory and battery, Simple and Clean device.
17. Protection of your private data.
18. You can specify the location of the field to knock the lock screen.
19. Invisible path to Unlock Pattern/lock change every minute.
20. 12 hour and 24 hour format both supported.


Knock Lock uses the Device Administrator permission.
To enable Double tap to lock, please activate Knock Lock as "device administrator". It's only used for lock device on double tap on floating icon.


Please be assured that Knock Lock Screen will never use these permissions to access your private data.

App Permissions

Allows an application to read from external storage.
Allows an application to write to external storage.
Allows an app to create windows using the type TYPE_APPLICATION_OVERLAY, shown on top of all other apps.
Allows applications to disable the keyguard if it is not secure.
Allows access to the vibrator.
Allows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Allows applications to open network sockets.
Allows applications to access information about networks.
Allows applications to access information about Wi-Fi networks.
Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting.