AppLock - Dark Night is a free app protector tool for Android developed by BigFun. It is a lightweight app that ensures the privacy of your mobile apps. With AppLock, you can lock any app of your choice, including Facebook, Whatsapp, Gallery, Messenger, SMS, Contacts, Gmail, Settings, and incoming calls, among others. This app helps prevent unauthorized access and ensures that your privacy is guarded and secure.

AppLock - Dark Night has both PIN and Pattern lock styles to choose from, with random keyboard options for PIN lock. This feature ensures that your password or pattern cannot be peeped by anyone. There are built-in sets of beautiful Pattern and PIN themes that you can customize to suit your preferences. The app also has a home screen locker and lock screen timeout to further protect your privacy.

The app is user-friendly with an easy-to-use GUI. You can lock any app using a pattern, and it also has the option to lock 3G, 4G data, Wi-Fi, Bluetooth, and more. With AppLock - Dark Night, you will never have to worry about someone accessing your private information or messing with your settings, sending wrong messages, or playing games on your phone.