Circle o Fifths: Guitar+Piano

Circle o Fifths: Guitar+Piano

Chords, Scales & Songwriting

1K ratings
56 reviews
$4.99

Details

  • Released
  • Updated
  • February 19, 2020
  • August 23, 2026

Features

Circle o Fifths: Guitar+Piano video #1 for iPhone
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About

Learn and practice music theory with an interactive circle of fifths. Explore major, minor, and diminished keys with audio recordings and guitar chord charts. Visualize chord relationships and transpose songs easily.

Interactive circle of fifths
Major, minor, and diminished keys
Audio recordings of chords
Guitar chord charts
Color-coded note/chord reference
Chords tab for key relationships
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What users say

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What's New in Circle o Fifths

2.2.1

August 23, 2026

The biggest update yet — a whole new Scales tab. • See any scale on the guitar fretboard or piano keyboard, color-coded by degree. Guitarists get the five CAGED shapes, full-neck patterns, and a Licks Library of ready-made riffs, now including Metal and Bluegrass. • Guitar chord charts now flip vertical or horizontal — whichever you read faster. • Progressions follow along — watch the current chord and what's coming next as your track plays. • Refreshed in-app help, cleaner controls, and a bunch of fixes. *Fixed in 2.2.1: guitar chords in the Progressions tab now play at the correct pitch — they were sounding a major third sharp. Thanks to the player who reported it! Thanks for playing! Ideas or requests? We'd love to hear them.

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Events

Read more about Build chord progressions

Build chord progressions

Loop chord progressions on piano or guitar

Jun 24, 2026 Jul 21, 2026

Read more about Piano mode

Piano mode

Piano mode

Jun 23, 2026 Jul 15, 2026

User reviews

Major good timez

Top tier update. I learn music so easy. 5 star! Lets to move chords around for future. Folk and Rock patterns! Loistava!!!

Nice Updates But,,,,

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!
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Response from developer

GSP 2026! Thank you for pointing out that bug! This has been fixed in version 2.2.1.

Excellent !

Rien à ajouter

可以增加中文支持吗

可以增加中文支持吗,谢谢!

Simply a Great tool!

This app keeps getting better. Great Job!

Response from developer

Thanks so much for the review! Glad to hear you like the app!

Developer apps

User experience

🐞

Reported Bugs

3 issues

Viewport not dynamic, causing cut-off edges

Bug

No E# in the key of F#, should be F dim

Bug

B major chord sample sounding like Esus

Bug

Requested Features

3 requests

Add more chord variations and voicings

Feature

Provide options for different instruments (e.g., ukulele)

Feature

Include major and minor pentatonic scales

Feature

FAQ

What is the Circle of Fifths: Music Theory app?

This app is a music theory tool designed to help users learn and practice the circle of fifths. It provides interactive elements, audio recordings, and guitar chord charts to understand key relationships and chord progressions.

What are the key features of this music theory app?

Key features include an interactive circle of fifths with three rings for major, minor, and diminished keys, 36 audio recordings of chords, guitar chord charts, color-coding for easy reference, and a dedicated chords tab for exploring key relationships.

Is the Circle of Fifths: Music Theory app free to use?

Yes, the application is available for free. There are no in-app purchases or advertisements mentioned in the provided description, suggesting a completely free experience.

Who would benefit from using this music theory app?

This app is ideal for musicians, songwriters, and music students who want to improve their understanding of music theory. It's particularly useful for learning chord relationships, practicing in different keys, and aiding in song composition.

How does the app help with learning guitar chords?

The app includes 36 guitar chord charts that can be accessed by tapping and holding on any note or chord within the circle of fifths. This allows users to see how to play each chord and learn its position on the guitar.