App Lock is an Android application developed by Little Angel that provides an extra layer of protection to your phone. With this app, you can secure your apps and data from unauthorized access. The app offers two types of locks: pattern lock and pin lock. Choose your favorite style of lock, or use the fingerprint scan lock for added security.

In addition to locking your apps, you can also lock your phone gallery, contacts, and other system apps. If you forget your pattern lock or pin, you can easily reset it by answering your security questions. This app adds that extra security needed to protect your data on your phone, such as contacts, photo & video gallery, notes, etc.

The app requires permission to query all packages, package usage stats & protected permissions, use fingerprint, foreground service, and receive boot completed. These permissions are necessary for the app to function properly.

Overall, App Lock is an excellent app for anyone who wants to secure their phone's apps and data from unauthorized access. It is easy to use and offers a variety of lock options for added security.