# Music By Numbers — A Post-Tonal Calculator > Post-tonal music calculation tool for matrices and pitch sets. (iPhone/iPad app by Timothy Bausch.) - Source: https://appshunter.io/ios/app/music-by-numbers/id1623018554 (this page in markdown: same URL + `.md`) - Developer: [Timothy Bausch](https://appshunter.io/developer/1608625885) - Category: Music, Utilities, Music - Price: Free - Rating: 5.00/5 from 6 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 2 MB - Languages: English - Released: 2022-05-22 - Data updated: 2026-06-05 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/music-by-numbers/id1623018554/reviews.md ## What is Music By Numbers? Music By Numbers takes the tediousness out of post-tonal calculations by giving you the ability to instantly calculate matrices and pitch set collections. Moreover, you can select specific Pitch Classes (PCs) on the matrix to either view the pitch set information or to view the set on the PC circle. Not only does the Set page allow you to view the normal form, prime form, Forte number, and interval vector of a set, it also allows you to rotate the set around the circle, invert the set, show the compliment of the set, and flip the set over an axis of your choice. The app also allows you to save and edit any matrix or set for future reference. Upon saving, the app will ask you to add any piece information or additional notes that may be helpful (but these fields can be left blank if not applicable). This information can be viewed by tapping the information button on the saved instance in your Library. The app will accept the characters a or t to represent 10 and b or e to represent 11 in any input field. How the app displays integers 10 and 11 on saved instances or in the matrix/set information fields is customizable in the app settings. The colors for PC selection, PC circle set shape, and the axis color are fully customizable in the settings page as well to make your experience as enjoyable as possible! ## Key features - Instant matrix and pitch set calculations - View pitch set information on matrix - Rotate, invert, and flip sets - Save and edit matrices and sets - Customizable display for 10 and 11 - Customizable colors for PC selection and axis ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/music-by-numbers/id1623018554/reviews.md ### 5/5 — Cool app *2023-06-18* Awesome app ### 5/5 — Amazing! *2022-12-17* This is an amazing app for musicians! It’s so helpful with post tonal analysis and a great tool! ### 5/5 — Practical and Beautiful *2022-06-28* This is a practical app for analysis and composition. It is intuitive and provides all the info I want. The ability to move seamlessly from matrix to set theory is helpful in ways I didn’t expect! For example, quickly identifying the prime form of a segment of a tone row has sped up the analysis process greatly. I am also thrilled to be able to generate tone rows with fewer than 12 pcs, and to be able to save all my rows and sets. An app for musicians by musicians. ## Frequently asked questions about Music By Numbers ### What is Music By Numbers used for? Music By Numbers is designed to simplify post-tonal music calculations, allowing users to instantly compute matrices and pitch set collections. It provides tools for analyzing and manipulating pitch sets. ### Can I save my work in Music By Numbers? Yes, you can save and edit any matrix or set for future reference within the app. You can also add piece information or notes to your saved instances. ### How does Music By Numbers handle numbers 10 and 11? The app accepts 'a' or 't' for 10 and 'b' or 'e' for 11 in input fields. The display of these integers in saved instances and information fields is customizable in the app settings. ### Is Music By Numbers available on Android? Based on the provided data, Music By Numbers is available on iPhone, iPad, and iPod. There is no information indicating Android support. ### How often is Music By Numbers updated? The latest version of Music By Numbers is 1.1.1, which was last updated on November 28, 2022. This suggests updates are not extremely frequent. ### What is the age rating for Music By Numbers? Music By Numbers has an age rating of 4+, making it suitable for a wide range of users. This indicates it contains no mature content. ### Does Music By Numbers have ads? No, Music By Numbers does not contain advertisements. The app is free to use without any ad interruptions. ### What is the user sentiment for Music By Numbers? Music By Numbers has received overwhelmingly positive feedback, with a rating of 5.0 stars from 6 ratings. This indicates a high level of user satisfaction. ## Version history (last 5 releases) ### 1.1.1 — 2022-11-28 This update fixes an issue where the keyboard would not dismiss when clearing Aggregen text input field. ### 1.1.0 — 2022-11-28 Introducing Aggregen! Aggregen is a handy tool to calculate all the possible tetrachord combinations from a tetrachord input that completes a twelve-tone aggregate!  Aggregen also supports exporting list of aggregates to PDF. ### 1.0.2 — 2022-06-07 This version fixes a bug where the app would crash when navigating from a saved matrix to the matrix view. I have also added an option in the settings to leave a review in the App Store! Thank you for your patience and my apologies for the poor experience the last update introduced! ### 1.0.1 — 2022-05-30 This minor update fixes: - An issue where the keyboard would not dismiss after entering in either a row or set. - An issue where the set information would not update when calculating a new set. - An issue where the set information did not clear when the clear button is pressed. Thank you for your patience! ### 1.0 — 2022-05-22 No release notes. ## Apps similar to Music By Numbers | App | Rating | Price | Category | | --- | --- | --- | --- | | [3D Chorus](https://appshunter.io/ios/app/3d-chorus/id1610943382) | 5.0 (9) | Free | Music | | [ToneShaper](https://appshunter.io/ios/app/toneshaper/id6455084482) | 5.0 (3) | Free | Music | | [Cellular Beats](https://appshunter.io/ios/app/cellular-beats/id6450444675) | 4.8 (5) | Free | Music | | [TATAT : midi streams generator](https://appshunter.io/ios/app/tatat-midi-streams-generator/id6449191050) | 4.8 (19) | $6.99 | Music | | [Mode Circle](https://appshunter.io/ios/app/mode-circle/id6444849284) | 5.0 (3) | Free | Music | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*