AppLock is a great app if you want privacy, protection or simply want to hide your stuff from the other users of your phone who may sneak into some of your private folder and files. Through this app you can lock and hide other apps like facebook, whatsapp, gallery,SMS, settings etc. AppLock can hide pictures and videos. Pictures and videos can be hidden from Gallery and only visible in the photo and video vault. Another unique feature for AppLock is that it has random keyboard and invisible pattern lock, hence no worry that people may peep the password or pattern. It is much safer.