# AngularQM vs Probability Calculator Plus

The clearest difference is rating: AngularQM at 5.0 against Probability Calculator Plus's 3.7. Probability Calculator Plus's advantage is update cadence (every 23 months vs every 49 months) and price ($2.99 vs $4.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

AngularQM costs $4.99 and Probability Calculator Plus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AngularQM holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

AngularQM ships an update every 49 months, Probability Calculator Plus every 23 months. The most recent releases landed on July 4, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | AngularQM | Probability Calculator Plus |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/angularqm/id1319354337/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/probability-calculator-plus/id1625628315/reviews) |
| Number of ratings | 1 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 49 months | **Every 23 months** |
| Monetization | Paid | Paid |
| Size | 5 MB | 1 MB |
| Requires iOS | 26.4 | **17.6** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gabriel Raffa](https://appshunter.io/developer/991109488) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## 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


### Probability Calculator Plus

[App page](https://appshunter.io/ios/app/probability-calculator-plus/id1625628315)

Master probability and statistics with instant, step-by-step solutions for various calculations and distributions. Includes a random experiment simulator and a comprehensive reference guide.

**Highlights:** Basic and conditional probability calculations, Venn diagram calculator with visual representation, Statistical distributions (Binomial, Normal, Poisson), Random experiment simulator (dice, coins, cards), Step-by-step solutions for all calculations, Calculation history and reference guide

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

**In-app purchases:** none


## Frequently asked questions

### Is AngularQM free?

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

### Is Probability Calculator Plus free?

Probability Calculator Plus costs $2.99, with no in-app purchases.

### Which has better reviews, AngularQM or Probability Calculator Plus?

AngularQM is rated higher. AngularQM averages 5.0 out of 5 from 1 ratings, while Probability Calculator Plus averages 3.7 from 3 ratings.

### Do AngularQM or Probability Calculator Plus have ads?

Neither AngularQM nor Probability Calculator Plus shows ads.

### Which is updated more often, AngularQM or Probability Calculator Plus?

AngularQM ships an update every 49 months, and Probability Calculator Plus every 23 months. Most recently, AngularQM was updated on July 4, 2026 and Probability Calculator Plus on September 21, 2026.

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