App Lock is a lightweight app that lets you lock almost any type of file on your device. The most basic feature locks your applications so nobody can access or uninstall them, but you can lock photographs, videos, and even contacts and individual messages.
The application works in a very simple way. First, you have to create a numeric password to unlock the application you want to protect. From that moment on, every time that app is opened, it will require you to insert the password you have defined. Even if another user tries to uninstall it, this password window will not allow it.
The best thing about this app is that you can even hide its icon so nobody knows that you have it installed on your device, though theyll figure it out if it asks them to insert the corresponding password.
App Lock is an interesting application. With it, you can add an additional safety net to your device and never worry again about handing it over to a friend.