The app plays a chord a note at a time and you'll sing the notes. Your voice will be recorded and the notes you sang will be composed together and then played back to you. Depending on how well you sing, it ought to sound like a harmonious chord.
Multiple chords (major, minor, 7, diminshed, augmented) with any base note.
Can save the chord you sang onto your device ( internal media /Music/ChordHarmonics folder with [chord name]_[date].m4a file nam).
Provides near real-time visual feedback while you're singing.