Harmonizr is a vocal harmonizer offering a unique and fun user interface on your iPad or iPhone. You can sing a melody, setting the appropriate key centers, and Harmonizr will do the rest, giving 3 voices of automatic harmony. A preset mechanism allows you to change the harmonization, and an editor allows you to customize how you want to harmonize each type of key center (major, minor, and dominant).
A fully functional Vocal Harmonizer iPad App
Harmonizr also supports MIDI input, both to detect key center, and to provide a mechanism for keyboard players to manually specify harmony. There is a 10-voice limit in manual harmonization, and it can be used in conjunction with the automatic voices to create a richer sound, with a total of 14 voices. Harmonizr works as AUv3.