A free program for Android, by SailingLab.
AppLock – Seagulls is an easy-to-use application that provides users with an effective and reliable way to protect their privacy in mobile apps.
What is AppLock?
AppLock is a light app protector tool to protect your privacy in mobile apps. It can help you to prevent other people from accessing your personal information and private conversations.
You can also use it to protect your privacy in the apps you use the most.
How to Use AppLock – Seagulls?
First of all, you need to install the application on your device. Then, launch the application, and follow the instructions to set the password.