# ER3D Euler Rotations in 3D vs Math Trainer

The clearest difference is in-app purchases: ER3D Euler Rotations in 3D at none against Math Trainer's 1. Math Trainer's advantage is iOS requirement (16.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Math Trainer sells 1 one-off in-app purchase. ER3D Euler Rotations in 3D asks for nothing beyond the download.

## The numbers

| Metric | ER3D Euler Rotations in 3D | Math Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 114 MB | 31 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eliott Radcliffe](https://appshunter.io/developer/1477487767) | [Myroslava Zazuliak](https://appshunter.io/developer/1860692193) |

## What reviewers say

### 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


### Math Trainer

[App page](https://appshunter.io/ios/app/math-trainer-vectors/id6756442899)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium-Upgrade | $0.99 | one-time |


## Frequently asked questions

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

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

### Is Math Trainer free?

Math Trainer is free to download, with in-app purchases available.

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

Neither ER3D Euler Rotations in 3D nor Math Trainer 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.*