AppLock is a highly-rated app locker tool that is designed to protect your privacy using password, pattern, fingerprint, and PIN locks. It is currently the top downloaded app lock on the Play Store and is a great privacy protection tool for Android that supports 12 languages. This app locker tool allows you to lock apps like Gallery, Messenger, SMS, Contacts, Email, Chat, Settings, incoming calls, and any app you choose, to prevent unauthorized access and guard privacy.

One of the best things about AppLock is that it can hide pictures and videos, which vanish from the Gallery and are only visible in the photo and video vault, ensuring that your private memories are protected. You can also lock new apps, incoming calls, and system settings to prevent a mess by kids, and AppLock has a random keyboard and invisible pattern lock to prevent people from peeking at your password or pattern.