Virsyn has released Harmony Eight for iOS. It can create up to eight pitch shifted voices from your input vocals or monophonic instruments. Virsyn says that you can position each voice in space ( left and right / front and back ), modify the voice character from male to female and vice versa and pitch shift each voice in the range of +/- one octave with preserving of formants for natural sound. You can also Apply separate feedback delays on each voice creates complex rhythmical patterns.
Pricing and Availability:
$6.99 at the app store.