Circle of Fifths, Opus 1 4+

Music theory learning tool

Felt Tip Inc.

Designed for iPad

    • 3.0 • 3 Ratings
    • $2.99



A music theory tool for beginner musicians, Circle of Fifths, Opus 1 is a pocket reference for analyzing, transposing, and composing music. This app focuses on major and relative minor scales and chord progressions.

For a more advanced version of Circle of Fifths, check out our Circle of Fifths, Opus 2 edition. Opus 2 explores musical modes often used in jazz and a variety of other musical styles.

• Interactive circle: rotate it or tap on a key to see its scale and circle chord progression.
• Play scales and chords out loud by tapping on the staves.
• Tap on individual chords to explore chord patterns.
• Includes both chord name and roman numeral notation.
• Choose from treble, bass, or alto clef.

Circle of Fifths, Opus 1 was created by Lucius Kwok and Agnes Chan. Made in NYC.

What’s New

Version 2019.12.5

Moved the support FAQ to

Ratings and Reviews

3.0 out of 5
3 Ratings

3 Ratings

Spudgirl48 ,

Should cost less

This app is okay, but it is way over-priced. It is very simplistic. For example: There isn't an explanation of what the circle of fifths is or how beneficial it can be to the music student. It doesn't name the chords, which would be very helpful. It doesn't show any chord inversions. It doesn't have anywhere near as much information as I would expect from a $4.99 app. I have $1.99 apps that have more information.

Rambo8649 ,

I like it, a little pricey

I just wanted an app to study the Circle Of Fifths, and to use as a future reference. This app gives me that, but it gives it in a nicely designed and functioning package. As for cost, I feel it’s a bit much for an app as simple as this.

elgranjefe ,

No instruction how to navigate.

Has nothing important to show.

App Privacy

The developer, Felt Tip Inc., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

More By This Developer

Health & Fitness
Health & Fitness
Photo & Video
Health & Fitness
Health & Fitness

You Might Also Like