Circle o Fifths: Guitar+Piano

Name: Circle o Fifths: Guitar+Piano
Price: 4.99 USD
Rating: 4.8 (1053 reviews)
Author: Tim Mueller

Chords, Scales & Songwriting

$4.99 · Designed for iPad. Not verified for macOS.

1.1K Ratings
Age Rating

4+
Years
Chart

#110
Music
Developer

Tim Mueller
Language

EN
English
Size

12.5
MB

New Scales tab! See any scale on guitar or piano, with CAGED shapes, solo patterns, and a licks library — blues, rock, metal, bluegrass and more. Turn music theory into something you can actually play — on guitar or piano. Circle o Fifths is the fastest way to find the chords in any key, learn the scales to solo over them, and write your own songs. A handy practice tool that's a game changer for learning songs, writing your own, and finally understanding how chords fit together. NEW in 2.2: A Scales tab — see any scale on the guitar fretboard or piano keyboard, color-coded by degree, with the five CAGED shapes, full-neck patterns, and a Licks Library of ready-made riffs (blues, rock, metal, country, bluegrass, jazz, and worship). Plus guitar chord charts that flip vertical or horizontal. NEW in 2.1: 21 color themes — tap the palette to redress the entire app; a few are suspiciously reminiscent of your favorite films, albums, and bands. NEW in 2.0: Piano mode and a chord progression builder. Switch between guitar and piano on the fly — chord diagrams, sounds, and strumming all swap to match. Head to the new Scales tab to see any scale light up on the fretboard or keyboard, work through CAGED shapes and full-neck patterns, and learn ready-made licks note for note. Jump to the Progressions tab to build your own chord progressions, pick a tempo, and hear them played back with realistic strumming patterns. And tap the palette to recolor the entire app — wheel, badges, and chord charts — with 21 handpicked themes. Features: • 3 full rings with support for all major and minor keys • 36 interactive notes/chords on the circle • NEW! Scales tab — see any scale on guitar or piano, color-coded by degree - The five CAGED shapes plus full-neck patterns (Diagonal, 3 notes/string) - Chord-tones view to spotlight the root, 3rd, and 5th - Licks Library — ready-made riffs in blues, rock, metal, country, bluegrass, jazz, and worship - Tempo control to run any scale up and back • NEW! Guitar chord charts flip vertical or horizontal • 21 color themes — personalize the wheel, badges, and chord charts (just tap the palette icon) • Key badge in the center of the wheel — your current major and relative-minor key, plus its key signature, at a glance • Toggle between guitar and piano modes — affects both sounds and diagrams • Synthesized piano with rich, multi-voice triads • 36 real guitar audio recordings of every chord on the circle • 36 guitar chord charts — drawn right in the app and themed to match; just tap and hold to learn • Piano chord diagrams with highlighted notes on a keyboard • Color coding to help you reference and learn the note/chord you're playing • Chords tab to see all chords in each key, with major/minor relationships • Progressions tab — build your own progressions and hear them play back - Pick any major or minor key (24 total) - Tap I, ii, iii, IV, V, vi, vii° to add chords to your track - NEW! Follow along — see the current chord and what's next as it plays - Tempo control and loop for practice - Strum patterns: Whole, Quarter, Eighth, Folk, Rock - Built-in metronome The outside ring of the circle has all the major keys. Tap any of them to hear and change the key. The color coding tells you which number each chord is. The middle ring has all the minor keys, and the inner ring has the diminished chords. Tap any chord to hear it, or tap and hold to see how to play it on guitar or piano! If you're playing in a major key, use the color coding up top to understand the chord relationships. If you're playing in a minor key, use the color coding on the bottom. Use the Chords tab to play songs in any key, transpose on the fly, and see major/minor key relationships. Use the Progressions tab to compose, practice over a loop, or hear common progressions like I-IV-V or ii-V-I in any key. Use the Scales tab to find the notes to solo over any chord — pick a pattern, target the chord tones, and grab a lick to get you started.

Events

CHALLENGE
A scale a week

Four weeks, four shapes: minor pentatonic, the blues scale, Dorian, then the CAGED system — on a real fretboard or keyboard.

Ratings & Reviews

4.8

out of 5

1.1K Ratings

Simple and useful.
03/07/2023
TraxusIV
There’s a book called ‘The Chord Wheel’ published by Hal Leonard that illustrates the same concept as this app. While it’s a good book to have on hand it has one important deficiency: it doesn’t show any fingerings or even the notes for the particular chords. For someone who isn’t very familiar with music theory, this can make it difficult to use the book properly, potentially requiring lots of cross referencing, googling, and general research into theory.This app solves that problem by presenting the circle of fifths/chord wheel side by side with sample fingerings for each chord. Simple, effective, and useful. Well worth the trivial cost of the app. Thanks to the developer for making this one.
Simple and useful.
03/07/2023
TraxusIV

There’s a book called ‘The Chord Wheel’ published by Hal Leonard that illustrates the same concept as this app. While it’s a good book to have on hand it has one important deficiency: it doesn’t show any fingerings or even the notes for the particular chords. For someone who isn’t very familiar with music theory, this can make it difficult to use the book properly, potentially requiring lots of cross referencing, googling, and general research into theory.This app solves that problem by presenting the circle of fifths/chord wheel side by side with sample fingerings for each chord. Simple, effective, and useful. Well worth the trivial cost of the app. Thanks to the developer for making this one.
Nice Updates But,,,,
Aug 21
GSP 2026
In the progressions tab an Emaj chord as it sounds on the app is played as a G# chord in standard tuning on guitar and a Bmaj chord as it sounds on the app is played as a D# chord on guitar in standard tuning. Other chords may also be set to higher pitches.However, The piano chords in the progressions tab are the right pitch to play along with on a guitar in standard tuning.Overall I think you are developing the app in good ways. simplicity is genius as they say as well as efficient!

Developer Response
GSP 2026! Thank you for pointing that out! This has been fixed in version 2.2.1.
Nice Updates But,,,,
Aug 21
GSP 2026

In the progressions tab an Emaj chord as it sounds on the app is played as a G# chord in standard tuning on guitar and a Bmaj chord as it sounds on the app is played as a D# chord on guitar in standard tuning. Other chords may also be set to higher pitches.However, The piano chords in the progressions tab are the right pitch to play along with on a guitar in standard tuning.Overall I think you are developing the app in good ways. simplicity is genius as they say as well as efficient!
Developer Response Sep 11
GSP 2026! Thank you for pointing that out! This has been fixed in version 2.2.1.
Works great, nice reference and tool!
Jul 13
Tekrytor
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!

Developer Response
Thanks so much for the review! Great ideas! Watch out for more updates in the future!
Works great, nice reference and tool!
Jul 13
Tekrytor

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!
Developer Response Jul 17
Thanks so much for the review! Great ideas! Watch out for more updates in the future!
Super Helpful!
Sep 7
#savlovesmusic
This app has been extremely helpful and insightful. Such good information. I have been able to use it so much when I need a quick chord progression. Highly recommend!!

Developer Response
#savlovesmusicSo glad you are finding it helpful!-Tim
Super Helpful!
Sep 7
#savlovesmusic

This app has been extremely helpful and insightful. Such good information. I have been able to use it so much when I need a quick chord progression. Highly recommend!!
Developer Response Sep 11
#savlovesmusicSo glad you are finding it helpful!-Tim

Just some polish in this one.

Version 2.2.6 5d ago

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Accessibility

Information

Seller: Sleep Laugh Studios LLC
Size: 12.5 MB
Category: Music
Compatibility: Requires iOS 15.0 or later.

iPhone
Requires iOS 15.0 or later.

iPad
Requires iPadOS 15.0 or later.

iPod touch
Requires iOS 15.0 or later.

Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.

Apple Vision
Requires visionOS 1.0 or later.
Languages: English
Age Rating: 4+

4+

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