Harmony Eight is a truly unique app which gives you a lot of flexibility working especially with vocals! It offers up to eight pitch shifted voices are created from vocal input or instruments. Separate algorithms for optimal shifting of vocals/monophonic instruments and for any other kind of audio.
Position each voice in space ( left and right / front and back )
Modify the voice character from male to female and vice versa.
Pitch shift each voice in the range of +/- one octave with preserving of formants for natural sound.
Applying separate feedback delays on each voice creates complex rhythmical patterns.