Knock Lock Screen- Android App to Lock Applications

The knock lock screen is listed under the tools category application on the Android Play Store. The developers have rated application content appropriate for age 3+. The latest edition of the app is 1.2.3., and it was last updated on 19 Oct 2022. The app is available for free of cost and is compatible with devices running Android 4.2.0 or higher.

You do not have to worry anymore about exposing your PIN while you unlock your phone in front of others. The knock lock screen is a perfect tool to provide ultimate security and privacy to your phone. Simply download and install the app and your phone is sealed with magic. No one will be able to guess how you unlock your phone. Instead of a lock pattern, you can choose a knock pattern for security. There are three options for the type of locks:

  • knock lock,
  • pattern lock, and
  • time password lock.

To activate the Knock Lock Screen, double tap to lock and activate Knock Lock as “device administrator” by granting permission. It’s only used for locking devices on a double tap on the floating icon. The app is very simple to use with user-friendly features.

Knock Lock has developed and offered this application. The size of the application on Google Play Store is 8.1 MB. The votes of 2,893 total users have awarded it an average rating of 4.0 out of 5 stars. Over 100,000 users have downloaded this amazing application.

Pros of the application

  • The invisible pattern is a smart way to keep your phone safe from onlookers.
  • The app comes with three different types of locks you can choose from. The types of locks are knock lock, pattern lock and time password lock. The time lock changes every minute so it is very unlikely to be guessed by someone.
  • It is a 100% safe app for security which prevents accidental calling and secures your information.
  • You can hide the app icon.
  • It is a simple and clean application which consumes less memory and battery. The app has super cool and rich graphics to enjoy with HD wallpapers.
  • This app is helpful for securing your mobile from kids who want to play games on it and go through your gallery.
  • Due to the invisible knock pattern, it gives a highly secure lock screen and makes your phone safe.
  • You know it is super safe because the invisible path to Unlock Pattern changes every minute.
  • The app requires Device Administrator permission to be activated but will never ask for permission to access your personal data.

Cons of the application

  • The user may experience some minor issues if they forget the knock pattern. There are no hints about the forgotten password.
  • A small number of users have complained that the app sometimes hangs or does not perform well on their devices.

Download the Application from Here


It is an exciting new app with excellent features. This app secures your phone with an invisible pattern. You will not have to worry about anyone using your phone without your permission when you are away. You can choose the location of your choice for the knock. With time lock you can pick two numbers and those combined with the current time are your new password.

So the time password changes every minute. It also provides an option to enable or disable unlock vibration. The updated version has new wallpapers and clock skins added. The lock is highly customizable with fake templates. This app prevents unauthorized access to your smartphone. It is an important tool to protect your mobile from any unauthorized user. If you do not want your mobile to be misused then it is a perfect application.