Circle of Fifths of 100+Scales

Contains adsIn-app purchases
4.3
165 reviews
50K+
Downloads
Content rating
Everyone
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About this app

In music theory, the Circle of Fifths (also called Circle of Fourths) is a way of organizing the 12 chromatic pitches as a sequence of perfect fifths. This Circle of Fifths trainer allows you to figure out chord progressions (e.g. I, IV, V) in any key for more than 80 heptatonic scales. It is useful for composing chord progressions/modulations and mixing in keys. This advanced circle of fifths app is very useful for beginners and experienced musicians.

Features:
⭐ Circle of Fifths and Fourths
⭐ More than 80 scales besides the modes like Aeolian, Locrian or Phrygian
⭐ Shows triads or 7th chords
⭐ Key selection including Octave
⭐ Rotate wheel to set the Key
⭐ Shows the chords on the Piano, Guitar and Staff
⭐ Easy to use Metronome with many instrument sounds
* Play chords by simply pressing on the wheel
⭐ Play chords along with simple but powerful Metronome with Speed-Trainer
⭐ Left and Right handed Guitar
⭐ Clockwise and anti-clockwise Circles
⭐ Option to show simple note names
* Chord root is played Bass guitar
* Separate volume control for Piano/Guitar, Bass and Metronome
* Help on each page describing how to use that page
⭐ The Circle of Fifths builds upon Music Theory Companion - the ultimate reference for chords, scales, music theory
⭐ Circle of 5ths with 100% privacy


This app can be used as a circle of fifths guitar trainer for the guitarists and circle of fifths piano trainer for the pianists.

A big thank you for reporting problems, suggestions or feedback: pgappstudio@gmail.com

Have fun and success learning, playing and practicing with your Guitar, Piano... 🎸🎹👍
Updated on
Sep 20, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity, App info and performance, and Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.3
157 reviews
David Lopez
October 2, 2025
this app is actually pretty good, I was looking for a circle of fifths app to help my students with music theory and the rotating wheel makes it pretty easy. there was a comment below about not being able to see flats counterclockwise on the left side of the wheel, but you can change the sharps to flats, there is a button labeled root in the top left corner, when you open that you can select sharps or flats. it is a bit annoying though that the default is sharps.
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PG App Studio
October 16, 2025
Thank you so much for your detailed feedback! We're thrilled that Circle of Fifths of 100+Scales is helping you teach music theory. We appreciate your tip about flats vs sharps and will consider changing the default. Keep enjoying the app, and please share it with your musician friends!
Marcus Gistedt
October 13, 2025
Great app, really fulfills its purpose. I thoguth for quite some time while testing it that it was ad-free, but surprised as I was, after fiddling with the app for like 10 minutes I changed scales/mode and there it was, the elusive ad! Jokes aside, great app, well made and simple to understand and use.
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PG App Studio
October 16, 2025
Thank you so much for your wonderful feedback! We're thrilled that Circle of Fifths of 100+Scales fulfills its purpose and is easy to use. We appreciate your understanding about ads. Keep enjoying the app, and please share it with your musician friends so they can benefit too!
K Allen
September 1, 2025
I love this app. It does everything I was looking for in an app for the circle of fifths. My only request is that when going counterclockwise around the circle of fifths it should indicate the flat keys and not the sharp keys.
1 person found this review helpful
Did you find this helpful?
PG App Studio
September 17, 2025
Thank you so much for the 5-star review! We're glad you love using Circle of Fifths of 100+Scales. Your suggestion about showing flat keys when moving counterclockwise—we will need more information on this. Please write us at pgappstudio@gmail.com with your inputs. Thanks in advance for your valuable help.

What’s new

✔ Improved the Metronome UI