Post-Tonal Theory Calculator 4+

L Tomlin

Designed for iPhone

    • 5.0 • 1 Rating
    • $3.99

iPhone Screenshots


Post-Tonal Theory Calculator is a musical set theory analysis tool and compositional aid. Using the app, you can define pitch class sets, then analyze and perform various musical set theory operations on the sets.

For pitch sets you define, the app will:

* Calculate Normal Form and Prime Form
* Display the Forte Number
* Calculate the interval class vector
* Show transposed and inverted sets
* Display a set matrix
* Sort, invert or complement the set
* Play the notes of the set as a melody or chord

The app also includes a comprehensive written overview of musical set theory. Composers like Arnold Schoenberg, Alban Berg and Anton Webern employed set theory techniques to organize the pitch content of their works.

What’s New

Version 1.0.4

This app has been updated by Apple to display the Apple Watch app icon.

- Fixes a bug where Normal Form for some pitch sets was calculated incorrectly
- Addresses UI layout issues on larger iPhone screens

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

Brock$ ,

Thank you

Thanks for putting this together

App Privacy

The developer, L Tomlin, has not provided details about its privacy practices and handling of data to Apple.

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.

You Might Also Like