Learn Quaternions vs ER3D Euler Rotations in 3D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Learn Quaternions
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.
- Visual quaternion exploration
- Interactive sliders for rotation
- 3D scene manipulation via touch
- Fun and engaging learning method
- Built with RealityKit
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Learning quaternions doesn't have to be hard! This app is a visual way to learn how quaternions work that makes it fun and interactive. Move the sliders to see the angle and axis of rotation change. Drag across screen to move around the scene. Made with RealityKit.
ER3D Euler Rotations in 3D
Explore 3D rotational kinematics with interactive models and augmented reality. Visualize complex concepts like yaw, pitch, roll, procession, nutation, and spin. Ideal for engineering students and learners.
- 3D rotational kinematics visualization
- Augmented Reality (AR) mode
- Space Shuttle and Gyroscope models
- Adjustable angles (yaw, pitch, roll, etc.)
- Interactive Globe Earth model
- Contextual text descriptions
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Three-dimensional (3D) rotational kinematics are one of the most important, and yet also one of the most easily misunderstood topics of advanced mechanical engineering dynamics and trajectory simulation modeling. The ER3D mobile app aims to be a teaching aid for students and interested learners who want to understand these fundamental kinematics in an interactive and visually appealing setting, including in Augmented Reality (AR). Features of the app include: - Space Shuttle model for teaching a 3-2-1 rotation sequencee - Gyroscope model for teaching a 3-1-3 rotation sequence - Sliders to update 3-2-1 (yaw, pitch, and roll) or 3-1-3 (procession, nutation, and spin) angles - Globe Earth that may be rotated to visualize locations at different latitudes and longitudes - Context menus with text descriptions of the kinematic properties ER3D is free and open source, developed for iPhone, iPad, macOS, and VisionOS using SwiftUI and RealityKit.
Screenshots
Verdict
The clearest difference is rating: ER3D Euler Rotations in 3D at 5.0 against Learn Quaternions's 2.0. Learn Quaternions's advantage is iOS requirement (13.5 vs 18.0). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ER3D Euler Rotations in 3D holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
| Parameter | Learn Quaternions | ER3D Euler Rotations in 3D |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.5 — better | 18.0 |
| Further details — not scored | ||
| Size | 2 MB | 114 MB |
| Age rating | 4+ | 4+ |
| Developer | Grant Jarvis | Eliott Radcliffe |
Customer experience
Learn Quaternions
ER3D Euler Rotations in 3D
In-app purchases
Learn Quaternions
No in-app purchases
ER3D Euler Rotations in 3D
No in-app purchases
Questions
Is Learn Quaternions free?
Is ER3D Euler Rotations in 3D free?
Which has better reviews, Learn Quaternions or ER3D Euler Rotations in 3D?
Do Learn Quaternions or ER3D Euler Rotations in 3D have ads?
Other comparisons
