Octavian Pro is the Swiss Army knife of music theory apps! Featuring 550+ scales and 100+ chords, with deep options for viewing, listening, and cross-referencing, Octavian is the ultimate reference, learning, and teaching tool. Essential for all musicians, students, composers, and songwriters!

As seen in Keyboard Magazine (Jan 2010): "It's a cheat sheet no keyboardist should leave home without."

• SCALES - 550+ scales from around the world and through history. View any scale with any root note, in any mode, and examine the chords and harmony within the scale.

• CHORDS - 100+ chords including sevenths, elevenths, ninths, thirteenths. Invert chords and browse scales that include the chord.

• PROGRESSIONS - Compose 12-step chord progressions, with inversions, transposition, and added sevenths for each step.

• DICTIONARY - Enter notes on the keyboard to find the scales and chords that contain the notes!

• DISPLAY - Configure the note labels to show notes, intervals, degrees, steps, or solfège (iPad only).

• PLAYBACK - Choose tempo, octave, and repeat options for the high-quality piano sounds to suit ear training, practice, or just hearing new harmonies.

A PDF user manual and video are available at

What's New

Version 2.1.1

• Hopefully fix audio playback bug

Customer Reviews

3.6 out of 5

17 Ratings

17 Ratings

Awesome! Great if interested music theory


Sound is working just fine people! Not sure why the review says that. EXCELLENT APP exactly what anyone who knows music theory would want if learning piano. Very few people don't learn both together so this app was perfect for me.

If you don't already know music theory this app might not help you but if you know it or are learning it you really couldn't ask for much more. I plug in my MIDI iRig iPhone keyboard and chord away!

If you want an app that stays out of the way but isn't missing any detail this is it.

Fix sound.


Not as useful without sound. Please fix. Should of had read the comments before paying 2.99 for it.



Cant use since they haven’t updated the app with ios 11


Scott Burgess
12.2 MB
Requires iOS 4.3 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2009-2013 Scott Burgess. All rights reserved.


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