# AngularQM vs Vector Gem

The clearest difference is price: Vector Gem at Free against AngularQM's $4.99. Vector Gem also leads on update cadence (every 2 months vs every 49 months) and iOS requirement (14.0 vs 26.4). On ads, in-app purchases and device support there is nothing between them.

Vector Gem is free to download; AngularQM costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AngularQM ships an update every 49 months, Vector Gem every 2 months. The most recent releases landed on July 4, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | AngularQM | Vector Gem |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/angularqm/id1319354337/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 49 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 5 MB | 15 MB |
| Requires iOS | 26.4 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gabriel Raffa](https://appshunter.io/developer/991109488) | [Fabian Langer](https://appshunter.io/developer/1537178343) |

## 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


### Vector Gem

[App page](https://appshunter.io/ios/app/vector-gem/id1537188969)

Visualize and manipulate 3D vectors, lines, and planes with multiple input formats. Explore intersections with axes and coordinate planes, and customize object colors and display settings.

**Highlights:** 3D vector, line, and plane input, Multiple input forms supported, Display of starting points and direction vectors, Calculation of intersection points, Customizable object colors and display settings

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AngularQM free?

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

### Is Vector Gem free?

Vector Gem is free to download, with no in-app purchases.

### Do AngularQM or Vector Gem have ads?

Neither AngularQM nor Vector Gem shows ads.

### Which is updated more often, AngularQM or Vector Gem?

AngularQM ships an update every 49 months, and Vector Gem every 2 months. Most recently, AngularQM was updated on July 4, 2026 and Vector Gem on September 24, 2026.

---

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