The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Subtorious Sound:
A Vocal Performance App that effects your voice in Real-Time. ShiftyVox is great for on stage, in the studio, or on the go, and it isn't just for vocals. All sounds are awesomely enhanced when heard through ShiftyVox. You don't have to be a musician to enjoy this app. Just plug in your headphones and trip-out at the sound of your own voice shifting like a robot monster from outer space. There are two modes, TImeMOD and FreqMOD. Each mode enables you to adjust how much shift is applied to your voice by moving the blue circle around the touch screen.Note: To use, turn iPhone, iPod Touch, or iPad volume all the way up, and use headphones or an external cable to go from the headphones out to a computer or an amplifier. You may have trouble hearing ShiftyVox's sound if you are not using headphones, especially if your device has a cover over the speaker. HEADPHONES REQUIRED.