# Learn Quaternions vs AeroRotationSim

The clearest difference is rating: AeroRotationSim at 4.5 against Learn Quaternions's 2.0. Learn Quaternions's advantage is iOS requirement (13.5 vs 18.5). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

AeroRotationSim holds the better App Store score, 4.5 against 2.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

## The numbers

| Metric | Learn Quaternions | AeroRotationSim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/learn-quaternions/id1560497809/reviews) | **[4.5 (2 ratings)](https://appshunter.io/ios/app/aerorotationsim/id6754519216/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 6 months |
| Monetization | Free | Free |
| Size | 2 MB | 7 MB |
| Requires iOS | **13.5** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Grant Jarvis](https://appshunter.io/developer/1475033835) | [Roger Eastman](https://appshunter.io/developer/1791448556) |

## What reviewers say

### Learn Quaternions

[App page](https://appshunter.io/ios/app/learn-quaternions/id1560497809)

Explore the abstract mathematical concept of quaternions through an interactive, visual experience. Manipulate rotation angles and axes with sliders and touch gestures to understand their behavior in a fun and engaging way.

**Highlights:** Visual quaternion exploration, Interactive sliders for rotation, 3D scene manipulation via touch, Fun and engaging learning method, Built with RealityKit

**Features:** macOS Compatibility

**In-app purchases:** none


### AeroRotationSim

[App page](https://appshunter.io/ios/app/aerorotationsim/id6754519216)

This educational tool helps aerospace and physics students understand the rotational dynamics of rigid bodies. It covers key concepts like Euler angles, quaternions, and angular momentum, aiding in the study of attitude control systems.

**Highlights:** Euler angles, Quaternions, Direction cosine matrices, Angular velocity and momentum, Space and body cones, Poinsot's construction, Gravity gradient torque, Attitude control system torque

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Learn Quaternions free?

Learn Quaternions is free to download, with no in-app purchases.

### Is AeroRotationSim free?

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

### Which has better reviews, Learn Quaternions or AeroRotationSim?

AeroRotationSim is rated higher. Learn Quaternions averages 2.0 out of 5 from 1 ratings, while AeroRotationSim averages 4.5 from 2 ratings.

### Do Learn Quaternions or AeroRotationSim have ads?

Neither Learn Quaternions nor AeroRotationSim shows ads.

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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.*