A full version program for iPhone, by VirSyn Software Synthesizer.

Harmony Voice is a pitch-shifting, harmonic-singing app for iPhone that lets you record and play back four-voice choir music using your iPhone as a keyboard. You can sing or play chords with one or multiple notes, or play a melody, and the app will add up to four voices according to the chords you play.

In addition, it has a built-in metronome, which you can use to help keep your rhythm, and you can record and share your music with the world.

You can also use it as a free audio recorder with a metronome, so you can record your own music and use the app as a music player.

Harmony Voice can also be used as a pitch-shifting, harmonic-singing app for iPhone, as well as a free audio recorder with a metronome.