Twelve Tone is made and published by Patrick Q. Kelly. AppBrain is an independent app data site and isn't affiliated with Patrick Q. Kelly. The app name, icon, screenshots and description belong to Patrick Q. Kelly and are shown as published on the App Store.
AppBrain's verdict
Established- Rating on App Store
- 4.69
- 16 ratings
- Last updated
- June 22, 2026
- Size
- 50.3 MB
It doesn't have enough ratings yet to judge what users think.
User feedback
Ratings and reviews on the App StoreComments on Twelve Tone for iOS
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Store listing
By Patrick Q. Kelly, from the App StoreDescription by Patrick Q. Kelly Written by the developer, not by AppBrain. Click to read.
• Enter a tone row by touching the staff or playing the piano keyboard.
• It lets you know if any notes are repeated by highlighting both notes, checking enharmonic values regardless of octave or accidentals.
• Automatically creates the Prime, Inversion, Retrograde, and Retrograde Inversion Magic Square.
• Constantly updates the Interval Vectors and Circular Analysis of the tone row as you edit it.
• Save your rows (rows may contain from 1 to 12 notes), complete with name and current P, R, I, RI matrix markings. Saved rows appear in a list with their name and midi numbers to help you identify them.
• Share a pdf of the notation, piano keyboard, and circular analysis.
• Watch and listen to your row played with a selected rhythm pattern.
• Playback:
- Prime
- Prime then Retrograde
- Retrograde then Prime
- Retrograde
- Inversion
- Inversion then Retrograde Inversion
- Retrograde Inversion then Inversion
- Retrograde Inversion
• Each can be repeated and transposed with each iteration.
• The Root is kept within an octave above and below the original pitch when looping and transposing.
• Matrix Audio: Hear the pitches as you mark them in the matrix square. The marks indicate the row form in which the pitch belonged; Prime, Inversion, Retrograde, and Retrograde Inversion.
• Lock the prime row and transpose it to C to use the Absolute Pitch Method for row labeling in the matrix.
Comes preloaded with the following rows:
Alban Berg's Lyric Suite
Babbitt's Composition for Four Instruments
Schoenberg's Variations for Orchestra Op.31
Schoenberg's Piano Piece Op.33a
Webern's Concerto Op.24
Webern's Piano Variations Op.27
Webern's String Quartet Op.28
Safety and technology
Found in the app by AppBrain- Price
- $4.99
- App size
- 50.3 MB
- Content rating
- Everyone
Technologies used by Twelve Tone
Releases
Updates seen on the App Store- Version
- 6.0
- Launched
- January 2011
No changelog data
Alternatives
Similar apps and more from Patrick Q. KellyMore from Patrick Q. Kelly
Rankings
App Store top chartsApp Store Rankings for Twelve Tone
About the app and developer
About Twelve Tone
Twelve Tone is a music app developed by Patrick Q. Kelly.
User Ratings
Twelve Tone is rated 4.69 out of 5 stars. The rating is based on 16 ratings.
App Information
Twelve Tone costs $4.99. The app size is 50.27 MB. The latest version available is 6.0. The last update was on June 22, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since January 2011.
Developer information for Patrick Q. Kelly
Address:
Frequently asked questions about Twelve Tone
Is Twelve Tone free?
No. Twelve Tone costs $4.99 on the App Store.
Is Twelve Tone still available?
Yes. Twelve Tone is on the App Store, and the last update we saw was on June 22, 2026.
How large is Twelve Tone?
Twelve Tone is 50.27 MB.
Is Twelve Tone suitable for children?
App Store rates the content of Twelve Tone as suitable for everyone.
How do people rate Twelve Tone?
Twelve Tone scores 4.69 out of 5 stars, from 16 ratings on the App Store.
Who made Twelve Tone?
Twelve Tone was developed by Patrick Q. Kelly. It is listed in the music category on the App Store.