# Trigonometry and functions vs ER3D Euler Rotations in 3D

The clearest difference is price: ER3D Euler Rotations in 3D at Free against Trigonometry and functions's $3.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ER3D Euler Rotations in 3D is free to download; Trigonometry and functions costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Trigonometry and functions | ER3D Euler Rotations in 3D |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 1 MB | 114 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gomathy Shankaran](https://appshunter.io/developer/503956143) | [Eliott Radcliffe](https://appshunter.io/developer/1477487767) |

## What reviewers say

### Trigonometry and functions

[App page](https://appshunter.io/ios/app/trigonometry-and-functions/id6739970869)

**Features:** 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 Trigonometry and functions free?

Trigonometry and functions costs $3.99, 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 Trigonometry and functions or ER3D Euler Rotations in 3D have ads?

Neither Trigonometry and functions 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.*