A free program for Android, by SailingLab.

Skull is the most popular and attractive pattern lock theme, which is loved by many people. It is one of the best ways to protect your privacy.

It has been proven that the application can protect the privacy of the user. The app can lock the apps to prevent other people from checking the photos and videos in the gallery, listening to the private conversations, and even reading the messages and contacts.

The lock can be easily unlocked and set to a new pattern, if the user forgets the password. This makes it very convenient for the user to use.