27 of the most used scales, includes 13 of the most used jazz scales
Unique colour coded.
It has never been more clear how to play a scale
Find the natural harmonics on each string
Includes the Circle of fifths
Includes scale notation
Use headphones or connect to an amp to hear the bass tones on the iPhone

What’s New

Version 1.2.1

Fixed a problem when showing harmonics.

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

Mr. Pluck ,

Pandemic relief!!

This is what I need to help get me through the pandemic! My knowledge and skill level will be far greater when I hit the stage again. Thanks for the more than thoughtful and educational content in this app. The intuitive layout and color coding is great! I no longer use bulky books to learn theory and scales.

Developer Response ,

Thank you for your kind words! Glad to be of help.

App Privacy

The developer, John Gellecum, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

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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