iVoxel is a singing vocoder with a vocal sequencer built in and is an application for the iPhone and iPad.
Usage for MusicEdit
It has many features beyond a sequencer. Like other VirSyn products it is based on the same ideas and concepts that Vocaloid is based on. But like previous software, such as Cantor, it is not intended to be a realistic singing voice. iVoxel shares similarities to iVocaloid, however like all VirSyn software it is intended to be a very different approach to the same concepts of the human voice.