A free program for Android, by SailingLab.

What is AppLock?

It is a utility that enables you to protect your privacy within mobile applications. The tool provides you with the ability to lock and secure your device with a PIN, password, or fingerprint lock. It also allows you to lock the app itself, along with any attempt by the user to open the application. With this tool, you can lock your most private apps and protect your privacy. It also has a built-in mechanism that allows you to easily and securely lock the apps.

How can I use it?

If you are a user of Android, you can download the AppLock utility for free. You will be guided through the setup process and you will be able to start using it. It is very simple to use and it is a very effective tool that can be used to protect your privacy within mobile applications.