The Best app lock in Play Store App Lock can lock Whats AppSMS, games Contacts, Gmail, Facebook, Gallery, Market, Settings, Calls and any app you choose, protecting your privacy. Protects(Locks) installed Apps using password(PIN or Words), pattern.... AppLock can hide pictures and videos, AppLock empowers you to control photo and video access. Selected pictures vanish from your photo gallery, and stay locked behind an easy-to-use PIN pad. With App Lock, only you can see your hidden pictures. Privacy made easy! With the help of App Lock, you may: Never worry about a friend borrow your phone to play games again! Never worry about a workmates get your phone to have a look again! Never worry about private data in some apps may be read by someone again! Never worry about your kids may changing phone's Settings, paying games, messing up it again! 1..How to change password? Open AppLock, left menu , settings, Change PIN 2..I forgot my password,How to find it? Tap AppLock icon to start Apps Lock. Tap the 'forgot password'.. If you remember security answer, you can reset your password by security answer. Enter your security answer. Reset your password. ---- Features --- Protects any apps using password or pattern Photo Vault, hide pictures Video Vault, hide videos secure your facebook from friends.. secure your gmail from friends.. secure your messages from friends.. Set individual passwords for each app Profiles, easy to change the locks Lock system Settings Lock Google Play Store Prevent apps from being uninstalled AppLock can be prevented from being uninstall AppLock cannot be killed by task killers Little memory footprint and power-saving