Apps 
Voloco is a real-time voice processing application that combines automatic tuning and voice coding. You can choose a song from your library to sing or hum: Voloco will automatically guess the key of the song and correct your voice based on that key. Voloco also allows you to record videos of yourself singing and share them on Facebook or Instagram
ed Android
varies with device
Voloco Auto Tune Harmony 2.1.3 Hack MOD APK Unlocked APK For Android
