Circle o Fifths: Music Theory

Name: Circle o Fifths: Music Theory
Price: 2.99 USD
Rating: 4.8 (1045 reviews)
Author: Tim Mueller

By: Tim Mueller App

Chord progressions and theory

Overview

Version:

2.1.1

Last updated: 2026-07-27

Ranking

#52,866 ▼ 13

Overall

Features & Capabilities

Grab your instrument and explore the circle of fifths with three concentric rings covering all major and minor keys. Tap notes to hear them, and hold to reveal guitar chords and how to play them on chord charts. Color coding shows scale-degree relationships at a glance.

36 interactive notes and chords, 36 real guitar audio recordings, and 36 chord charts help you practice, learn, and even write songs. The chords tab lets you transpose on the fly and compare major/minor relationships across the rings.

User Growth & Download Statistics

App Education Music & Audio

By:

Tim Mueller

Rating:

4.80

(1,045)

Version:

2.1.1 Last updated: 2026-07-27

Version code:

888888474

Creation date:

2020-02-19

Compatible devices:

Size:

9.33MB

Price:

2.99

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-08-10

Compare stats and ranking:

Ranking

# 52,866 ▼ 13

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Tim Mueller

Apple Apps Store

https://apps.apple.com/us/app/circle-o-fifths-music-theory/id1499417636

User Reviews

Overall, users praise this app as user-friendly and a comprehensive tool for learning the circle of fifths, with fingerings/voicings and audible chord examples that aid songwriting and understanding progressions. The main recurring downside is a non-responsive UI on small screens that cuts off parts of the circle. A few reports mention occasional audio or chord issues. Despite these, most reviews view Circle o Fifths as a valuable reference and a good value for studying music theory.

Pros

User-friendly and simple to use
Comprehensive circle of fifths concept with chord fingerings/voicings
Helpful for songwriting and understanding chord progressions
Lets users hear how chords should sound/are audible and informative

Cons

UI/viewport is not responsive on small screens, causing edges to be cut off

Recent reviews

This app keeps getting better. Great Job!

by GS*****, 2026-07-14

Like another review, there was no sound initially, but it started working after I tapped something or it need a little time connect the audio driver, but it started working. My request is to add PARTS (A,B,C,etc.) to the Progressions tab, with loop counters, so we can construct whole songs. Then it would be incredible as a songwriting tool and composition theory machine. General MIDI support would also be nice. The ability to select external MIDI devices for rhythm and tones would also be useful! I’m saving a star for those features. That all said, the price~performance ratio is superb. Buy it!