APP Lock allows you to set a password for those apps you don't want others to launch. This app is specially useful either if you have kids who take your Android to play or gossip friends. It tracks both the apps installed in your device (user apps) and your system apps like the Android Market or Applications Manager or the Incoming Call menu.
AppLock provides app protection. Hide private images and videos. Prevent people snooping secrets in Snapchat, Instagram, musical.ly, hike messenger and Pinterest etc.
What if someone uninstalls AppLock to break the locks? It will not happen after you enable Advanced Protection. Advanced Protection prevents force stopping or removing AppLock.