Privacy is the thing that we can't compromise with and even the latest smartphones don't provides our data such as, images, apps a trustworthy security. Applock is created with the aim to provide smartphone users an extra layer of security. With the help of App Lock users can put a restricted access to their favorite apps or folders in the device.\nMost of the app lock mobile application failed to give satisfactory service and are full of bugs. Along with the option to lock apps, App Lock also enables the users to move their images and videos to a hidden vault in AppLock. This feature helps the user in hiding the images or videos stored in the device.This App is selected as one of the 15 best Android free apps of 2017 by Android Authority. The app works efficiently and helps the user in locking on their favorite apps that no one else can access without the needed code or lock pattern.