It is an application which displays the circle of 4ths which is useful for analysis and a performance of a musical piece.
Reversing the direction of the circle of fourths gives the circle of fifths.

What’s New

Version 2.0.0

This app has been updated by Apple to use the latest Apple signing certificate.

The minor key indication function was added.
The function as which the title is set was added.

Ratings and Reviews

3.3 out of 5
3 Ratings

3 Ratings

D. Rendar ,

Great app, only a couple shortcomings

Great concept and funtionality, it would be a nearly perfect app if you could save your circle arrangements and export them as jpg or pdf. The fact that you can add a title to the circle almost seems to imply that a save function should exist, but regardless, you can always just take a screenshot.
The other thing that would be useful is a ‘clear’ line tool or something to basically erase an accidentally placed line without having to delete everything drawn in the circle.
Save for these few things this is a really great app, would be 5 stars if these were implemented.

App Privacy

The developer, mn, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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