App Lock and Gallery Vault - Wish you could simply lock all your private apps on your smartphone with just a click?
Hexlock - Security app locker keeps apps private with smart profiles for any situation
AppLock (FOSS) - A privacy App lock FOSS application.
Applocker - You can use AppLocker as part of your overall security strategy for the following scenarios:
Super AppLock - * Protect installed apps using password or pattern! * Support PIN lock and Pattern lock!
Girl Voice Changer - Girl Voice Changer – Voice Changer Effects is an entertainment app that changes your voice into a different girl tone by applying effects.