Hexlock - Security app locker keeps apps private with smart profiles for any situation
Pin Lock Screen - Pin Lock Screen is lock screen software for the protection of your cellphone.
App Lock and Gallery Vault - Wish you could simply lock all your private apps on your smartphone with just a click?
Voice Changer - Voice Changer is the name of a neat and clean voice changing application that will make you able to alter the pitch and the speed of any audio file.
AppLock (FOSS) - A privacy App lock FOSS application.
Pin Screen Lock - Pin Screen Lock is a screen lock security app, which enables you to create your own password that you can use to unlock your smartphone screen.