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.
Voice Changer Voice Recorder - Voice Changer Voice Recorder – Editor and Effect created and published by Handy Tools Studio for Android devices only.
Hide Secrets - Hide Secrets is an app that allows hiding everything they deem confidential on their smartphone.
Voice Changer KidsAppBox - Voice Changer by KidsAppBox is an amazing app that comes with more than 60 exciting voice changing effects includes the robot, telephone, old radio, lazy, monster, and echo, etc.