Don't panic! You don't need to know any music theory to use this app. The app will help you to come up with chords for your songs, practice music and master your instrument!


Stuck for new ideas? You're not sure which chords will sound good together? This app will help you!

▶ Chords of a key are highlighted, they will sound great together, just combine them.
▶ Learn how chords are played on the piano or guitar!
▶ Export songs as MIDI file and use it in Ableton, Garage Band or any other DAW.
▶ Thirds? Fifths? Mixolydian??? Don't panic! You don't need to know or learn any music theory, just play around with the app and you'll find out what will sound good together!


Get familiar with the circle of fifths and modes, practice progressions, scales and master your instrument.

▶ Compose songs or practice chord progressions. Check out the chord relations within the circle of 5ths.
▶ Check out how chords are played on your instrument with the expandable piano or guitar fretboard.
▶ Check out chords of popular songs, analyze and practice them.
▶ Practice scales in different keys and clefs. Basic scales are included — Unlock more than 80 additional scales if you are hungry for more!
▶ Playback scales and train your ear.
▶ Display the traditional circle of fifths with parallel minor chords.


▶ Display and playback 4-note chords in the circle of fifths. Have fun with modal interchange or customized chords! Check out chord statistics related to the currently active key.
▶ Use the app to teach your students the circle of 5ths and let them practice chord progressions and scales.


▶ Composing
Easily pick chords out of the circle of fifths. Create custom chords which are out of the key, change time signature (4/4, 3/4, 6/8, 7/8, 5/8), change the tempo (40-320bpm) and adjust the flexible song structure.
Once you've composed a song, you can quickly change the key to find the right one for you.

▶ A continuously growing list of popular songs
Check out what popular songs look like in the circle of fifths. Practice and analyze them, see directly which chords are off key.

▶ Piano & Guitar fretboard
Check out how chords and scales are played on the piano or guitar. Check out melodies or practice scales on the go with the interactive keyboard.

▶ Share & collaborate
Share song links with your friends, your teacher or band colleagues. Receivers (iOS only) can open and work on them in their Ultimate Circle Of Fifths app.

▶ MIDI export
Export songs as MIDI file and work with them in Ableton, Garage Band or any other digital audio workstation.

▶ Save songs
Save your favorite compositions on your device! Work on them later, share or export them as MIDI.

▶ Traditional circle of fifths
As the Ultimate Circle Of Fifths highlights the key in the "Songwriting" mode. You can also display the traditional circle of fifths with the parallel minor chords in the "Scale" mode of the app.

▶ Scales and modes
Practice scales of different modes in any key.

Available modes:
▻ Ionian (major)
▻ Aeolian (minor)
▻ Dorian
▻ Phrygian
▻ Lydian
▻ Mixolydian
▻ Locrian
▻ more than 80 additional scales with the optional "Scales Pack"

Practice in different clefs:
▻ G clef
▻ F clef
▻ C clef

▶ Chords and roman numerals
You can display chords, roman numerals or both.

▶ Different playback sounds:

▻ Grand Piano
▻ Acoustic Guitar
▻ E-Piano
▻ Synth Pad

Practice, compose with our without a click. Adjust volume levels individually.

▶ App settings:

▻ Transpose playback for Bb or Eb instruments.
▻ Four color themes, including a color blind theme.
▻ Display minor chords in small letters.
▻ Display 4-note-chords.
▻ Display german note names (B will be H).

▶ Infos

▻ Chord symbols and chord structures are explained.

▶ No registration (account) needed!

Please have a look at the apps privacy policy before you download it.

What’s New

Version 2.0.1

Rewritten from scratch! Tons of new features!

▶ Modal Interchange - Compose songs with chords of another key or create custom chords. Get chord statistics, related to the currently selected key.
▶ More bars and the possibility to create a song structure with a chorus, verse, etc.
▶ Optional: More than 80 additional scales.
▶ Traditional Circle Of Fifths: The key will not be highlighted, and the minor parallels will be displayed.
▶ Save your favorite songs.
▶ Share songs and collaborate with friends or band colleagues.
▶ A guitar fretboard.
▶ An interactive keyboard to check out melodies or practice scales on the go.
▶ List of popular songs to practice and analyze.
▶ Change time signature.
▶ Now with 320bpm as max. tempo
▶ A transposition feature for Bb and Eb instruments.
▶ Four color themes, including a color blind theme.
▶ Improved sound playback and an acoustic guitar sound.

Additional improvements in 2.0.1

▶ Even more stable sound playback
▶ Correct chord statistics
▶ When the traditional mode is active, the app will not display the key in the staff anymore
▶ Current row repeat will be displayed during playback
▶ Smaller improvements

Watch out, installing this version will delete your composition and settings! Remember them! (Only if you have app version 1.1.5 or lower)

Ratings and Reviews

4.8 out of 5
1.1K Ratings
1.1K Ratings
Prince Ricochet ,

Honestly? It’s unbelievably amazing!

Just rewritten from scratch, this app has only gotten better

Grimmonics ,

Overcharged for scale pack

Love the app so far - very quick and intuitive to use. Already have a couple of compositions saved and can jam out to the progression with my instruments to work on parts, etc. it would be cool to have more than one chord per measure, been using double time tempo to get around that. I purchased the additional scales pack and was overcharged. It said it was going to charge me $1.99, but I was actually charged $8.42. So buyer beware, you will be charged more than what is listed.

calvinbrodice ,

Great developer who cares about feedback

I posted a negative review of v1 and made a comment about colorblind accessibility. The developer took this feedback and in v2 released this feature.

This is a gem of an app backed by a first class developer. Great work!

Developer Response ,

Hey calvinbrodice! Thank you for your feedback! I'm currently working on a big update for the app. This update will include a colorblind color theme. I would love to get your feedback on that! If your interested, write me a mail to and I will invite you to the beta testings! Cheers, Chris!


Christian Hengst
79.7 MB
Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 - 2018 Christian Hengst
In-App Purchases
  1. 80+ Additional Scales $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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