# AngularQM vs Logarithm Rules Calculator

The clearest difference is price: Logarithm Rules Calculator at Free against AngularQM's $4.99. Logarithm Rules Calculator also leads on update cadence (every 3 weeks vs every 49 months) and iOS requirement (15.0 vs 26.4). AngularQM's advantage is in-app purchases (none vs 8). On ads and device support there is nothing between them.

Logarithm Rules Calculator is free to download; AngularQM costs $4.99 up front. Logarithm Rules Calculator sells 8 one-off in-app purchases. AngularQM asks for nothing beyond the download.

AngularQM ships an update every 49 months, Logarithm Rules Calculator every 3 weeks. The most recent releases landed on July 4, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | AngularQM | Logarithm Rules Calculator |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/angularqm/id1319354337/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 49 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 5 MB | 182 MB |
| Requires iOS | 26.4 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gabriel Raffa](https://appshunter.io/developer/991109488) | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) |

## What reviewers say

### AngularQM

[App page](https://appshunter.io/ios/app/angularqm/id1319354337)

This app helps quantum mechanics physicists quickly obtain matrix representations of angular momentum operators. It calculates matrices for J squared, the z component of J, and ladder operators for chosen total angular momentum values.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Logarithm Rules Calculator

[App page](https://appshunter.io/ios/app/logarithm-rules-calculator/id1662899656)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| +30 User Tokens | $0.29 | one-time |
| +1 Convenience Token / 6h, max. +2 | $0.59 | one-time |
| +2 Convenience Tokens / 6h, max. +4 | $0.99 | one-time |
| +150 User Tokens | $0.99 | one-time |
| +300 User Tokens | $1.49 | one-time |
| +4 Convenience Tokens / 6h, max. +8 | $1.59 | one-time |
| Remove Ads | $1.99 | one-time |
| Lifetime Access | $1.99 | one-time |


## Frequently asked questions

### Is AngularQM free?

AngularQM costs $4.99, with no in-app purchases.

### Is Logarithm Rules Calculator free?

Logarithm Rules Calculator is free to download, with in-app purchases available.

### Do AngularQM or Logarithm Rules Calculator have ads?

Neither AngularQM nor Logarithm Rules Calculator shows ads.

### Which is updated more often, AngularQM or Logarithm Rules Calculator?

AngularQM ships an update every 49 months, and Logarithm Rules Calculator every 3 weeks. Most recently, AngularQM was updated on July 4, 2026 and Logarithm Rules Calculator on August 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*