For the creative bass player

27 of the most used scales, includes 13 of the most used jazz scales
24 frets view available
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
Play the scales
Arpeggio modus
Play the arpeggios

What’s New

Version 1.5

Big update!
Now it's possible to hear the scales.
Added an arpeggio modus.
Listen to the Arpeggios as well.
New comparison tables for the modes and the jazz-modes
Faster loading
Bug fixes

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, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

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

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