# AngularQM — The Quantum Angular Momentum

> Quantum mechanics tool for angular momentum operator matrix representation. (iPhone/iPad app by Gabriel Raffa.)

- Source: https://appshunter.io/ios/app/angularqm/id1319354337 (this page in markdown: same URL + `.md`)
- Developer: [Gabriel Raffa](https://appshunter.io/developer/991109488)
- Category: Education, Books
- Price: $4.99 (on sale, was $9.99)
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 26.4 · 5 MB
- Languages: English
- Released: 2018-03-10
- Data updated: 2026-07-04
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/angularqm/id1319354337/reviews.md

## What is AngularQM?

AngularQM is an application for physicists working in quantum mechanics. It allows quickly obtain the matrix representation of the operators involved in the construction of angular momentum in quantum mechanics.

Once the total angular momentum of the quantum system under consideration has been chosen (j = 1/2, j = 1, j = 2, etc.) it is possible to calculate the matrices associated with the operator J squared and the z component of operator J. 

It is also possible to calculate and visualize the matrix representations of the ladder operators: J + and J-.

## Key features

- Matrix representation of angular momentum operators
- Calculates J squared matrices
- Calculates Jz component matrices
- Calculates ladder operator matrices (J+, J-)
- Supports various total angular momentum values (j)
- Visualizes matrix representations


## Frequently asked questions about AngularQM

### What is AngularQM used for?

AngularQM is designed to help physicists quickly obtain the matrix representation of operators involved in the construction of angular momentum in quantum mechanics. It calculates matrices for J squared, the z component of J, and the ladder operators.

### What total angular momentum values does AngularQM support?

AngularQM allows users to choose the total angular momentum of the quantum system, supporting values such as j = 1/2, j = 1, j = 2, and so on.

### Can AngularQM visualize the matrices it calculates?

Yes, AngularQM can calculate and visualize the matrix representations of the ladder operators, J+ and J-. This feature aids in understanding the operator behavior.

### What is the price of AngularQM?

AngularQM is a paid application, priced at $4.99. This one-time purchase grants access to all its features.

### Is AngularQM available on Android devices?

Based on the provided data, AngularQM is supported on iPhone, iPad, and iPod. Information regarding Android compatibility is not available.

### How often is AngularQM updated?

The latest version of AngularQM is 2.0.1, last updated on April 8, 2026. This indicates a recent update, suggesting ongoing development and support.

### What is the age rating for AngularQM?

AngularQM has an age rating of 4+, making it suitable for a wide range of users, including younger students and professionals.

### Does AngularQM have ads?

No, AngularQM does not contain advertisements. As a paid application, it offers an ad-free experience for its users.

## Version history (last 3 releases)

### 2.0.1 — 2026-04-08

New! PDF download available for printing. You can generate the matrix and download it as a PDF for printing, class use, or studying.
-Improved performance and responsiveness
-Updated UI for a better experiences
-Improve stability and reliability
-Improved matrix calculations for faster visualization

This update ensures the app remains compatible with the latest iOS and continues to support physicists and students in quantum mechanics.

### 1.1 — 2022-10-02

-minor improvements

### 1.0 — 2018-03-09

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

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## More apps by Gabriel Raffa

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All apps by Gabriel Raffa: https://appshunter.io/developer/991109488

## Related topics

[angular momentum](https://appshunter.io/ios/topics/angular-momentum)

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*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 2026-07-04.*