Knock lock screen - Applock

knock lock

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About this app

Are you worried about exposing your PIN while you unlock your phone?
Here comes Knock Lock - Applock for the rescue. The innovative Lock Screen that will leave intruders baffled!

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 of locks are-
1. Prevent Unauthorized Access
2. Invisible path to Unlock Pattern/lock change every minute.
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. 12 hour and 24 hour format both supported
9. Unlock vibration enable/disable
10. Unlock sound enable/disable
11. Highly secure lock screens
12. Choice to set knock position on screen.


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.

Ratings and reviews

Love your app. Using it since 8 years. I would like you to thicken the font size (are very thin) of the day & date which is displayed just below the time on your lockscreen. Also just 3 variety of time/date display is now boring, if you cannot include more varieties I suggest you to include fonts & font size changer so that I can create new varieties as per my convenience. Same changes in format of day (Sa, Sat, Saturday), date (dd/mm, mm/dd, dd/mm/yy) as per users convenience will be useful.

this is a really good app it's awesome in every way when you go through all the options is really incredible. definitely worth downloading and using it. the only drawback is when the app lock is on any phone calls will still overlay in front of the app but once they modify that feature to where it's still covers up the phone module this thing would be one of the best apps on the Play Store for security

Apps is best. I need some changes like, I don't want clock on lock screen. There is so many options/patterns of clock but no any option for no clock. 😅

What's new

**UI Improvements
**Minor bug fixes
** If you enjoy using this app, please take a moment to rate it, and tell us what changes you'd like to see, or bugs you've discovered.