Gallery vault is a security application just like the applocker, but it’s specifically designed to hide the content of gallery. It features a list of using entities that could help you retrieve your secrets without having to make your phone available. In addition to a password, it also has other safety credentials such as fingerprint and facial recognition for enhanced security. The best thing about this app is how small it is: only 8MB make it easy to install and use from any version of Android.
Gallery Vault app lets you hide sensitive information using a password and lock pattern. This app provides three levels of protection: Photo Vault (to hide photos from yourself), Location Vault (to hide photos from others) and File Vault (to hide files from others). It also lets you choose to hide everything, or only certain types of files (i.e. photos or files). Sharing with friends will be disabled as well as the option to select which photos can be shared.