# iGearbox vs ER3D Euler Rotations in 3D

The clearest difference is price: ER3D Euler Rotations in 3D at Free against iGearbox's $4.99. iGearbox's advantage is iOS requirement (12.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

ER3D Euler Rotations in 3D is free to download; iGearbox costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | iGearbox | ER3D Euler Rotations in 3D |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.0 (6 ratings)](https://appshunter.io/ios/app/igearbox/id451320370/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 55 months | — |
| Monetization | Paid | — |
| Size | 12 MB | 114 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [Eliott Radcliffe](https://appshunter.io/developer/1477487767) |

## What reviewers say

### iGearbox

[App page](https://appshunter.io/ios/app/igearbox/id451320370)

This app provides interactive tools to calculate gearbox ratios for regular and planetary gearboxes. It features a drag-and-drop design environment for gear trains and a dynamic graphic simulation for planetary gear sets, aiding in understanding and calculation.

**Highlights:** Interactive gear train design, Planetary gear set simulation, Ratio and speed calculations, Multiple gear train configurations, Dynamic component motion animations, Symbolic ratio equations, Dropbox data upload

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

**In-app purchases:** none


### ER3D Euler Rotations in 3D

[App page](https://appshunter.io/ios/app/er3d-euler-rotations-in-3d/id6741169432)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iGearbox free?

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

### Is ER3D Euler Rotations in 3D free?

ER3D Euler Rotations in 3D is free to download, with no in-app purchases.

### Do iGearbox or ER3D Euler Rotations in 3D have ads?

Neither iGearbox nor ER3D Euler Rotations in 3D 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.*