iPhone Music Software: This is a demo video of Octavian (App Store link), a $2.99 iPhone Keyboard Calculator.

With Octavian, you can:

• Quickly find scales and chords and transpose them to any root note
• View any mode of any scale
• View chords in root position and first, second, and third inversions
• Build chords on any scale degree
• Use Scale Explore to view all scales that contain the notes of the current chord
• Use Chord Explore to identify chords built on the degrees of a scale
• Traverse the Circle of Fifths by holding down the note selector for 1.5 seconds
• View scales/chords as notes (C E G), intervals from the root (0 4 7), or intervals from the previous note (0 4 3).

NOTE Octavian is NOT a synth. It makes no sound. Bitnotic hopes to make Octavian THE music theory app for the iPhone.