KeyBud is an application for all the music students, composers, and enthusiasts.

- Select your scale, tonic and see the changes in circle of fifths.
- See the changes in scale table.
- Change scale table mode to one of many chords or the scale of notes.
- Create custom lists.
- Its free for C Major scale, but you can upgrade to full version via in-app purchase.

KeyBud is available on Mac, iOS and tvOS!
Mac and iOS versions also have MIDI support, check them out on AppStore or at

Also KeyBud offers its MusicTheory, CircleOfFifths and PianoView components free on Github for Mac, iOS and tvOS!
Check them out at:

Supported Scales:
- Major
- Minor
- Harmonic Minor
- Melodic Minor
- Pentatonic Major
- Pentatonic Minor
- Pentatonic Blues
- Pentatonic Neutral
- Ionian
- Aeolian
- Dorian
- Mixolydian
- Phrygian
- Lydian
- Locrian
- Dim half
- Dim whole
- Whole
- Augmented
- Chromatic
- Roumanian Minor
- Spanish Gypsy
- Blues
- Diatonic
- Double Harmonic
- Eight Tone Spanish
- Enigmatic
- Leading Whole Tone
- Lydian Augmented
- Neopolitan Major
- Neopolitan Minor
- Pelog
- Prometheus
- Prometheus Neopolitan
- Six Tone Symmetrical
- Super Locrian
- Lydian Minor
- Lydian Diminished
- Nine Tone Scale
- Auxiliary Diminished
- Auxiliary Augmented
- Auxiliary Dim Blues
- Major Locrian
- Overtone
- Diminished Whole Tone
- Pure Minor
- Dominant 7th

Supported Chords:
- maj
- min
- aug
- b5
- 5
- dim
- 6
- minor 6
- 6add9
- minor 6add9
- Dominant 7th
- Major 7th
- minor 7th
- minor Major 7
- aug7
- dim7
- 7b5
- m7b5
- 7#5
- m7#5
- 7b9
- m7b9
- 7#9
- 7#5b9
- sus4
- sus2
- 6sus4
- Major 7sus4
- 7sus4
- 9sus4
- Major 9 sus4
- 9
- Major 9
- minor 9
- minor Major 9
- add 9
- minor add9
- 9#11
- 9b13
- 11
- Major 11
- minor 11
- minor Major 11
- 7add11
- Major 7add11
- minor 7add11
- minor Major 7add11
- 13
- Major 13
- minor 13
- minor Major 13
- minor Major 7add13

What’s New

Version 1.2

Now you can create custom lists and add them any scale and chord you want!
Go to preferences, scroll down to "Add custom list" button and start to create your lists.
You can also edit them to add/remove new items or delete them just by swiping in the "Custom Lists" screen.
Updated app icon.

Ratings and Reviews

1.8 out of 5
5 Ratings

5 Ratings

a.ippy ,

not worth the time

This could be a very helpful app, but it chooses to hide its features until a purchase has been made. All that is given in the free version is the notes in major scales; any other scale is unlocked when purchased.

Developer Response ,

Hi, thanks for the review!
As I explained in the app description, KeyBud is free for C major scale but you could unlock full app for $0.99 in-app purchase and get tons of scales, chords and ability to construct your custom lists with them. Also, you can connect your MIDI keyboard as well!

ytutgujyguytfuhuiy ,

Awesome app

Could you make it so that I can select my key and scale from the first screen in the pro version so I don't have to change menus constantly? I work on several different pieces at one time so it would help a lot! Thanks

ChrisBorgman ,

Yeah, not worth the download effort.

Only one key is not enough to understand what the app does, it might as well just be a screen shot, nothing to try out, nothing to click on. Boring user experience. Deleted right away.


Cem Olcay
33.2 MB

Requires iOS 9.0 and watchOS 2.0 or later. Compatible with iPhone, iPad, and iPod touch. Apple TV.



Age Rating
In-App Purchases
  1. Unlock Full App $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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