# Solution Equilibria Lab vs Touch Trigonometry

The clearest difference is in-app purchases: Solution Equilibria Lab at none against Touch Trigonometry's 1. Solution Equilibria Lab also leads on device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Touch Trigonometry sells 1 one-off in-app purchase. Solution Equilibria Lab asks for nothing beyond the download.

## The numbers

| Metric | Solution Equilibria Lab | Touch Trigonometry |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 114 MB | 48 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oleksandr Rubtsov](https://appshunter.io/developer/1823549572) | [Aisatsu LLC](https://appshunter.io/developer/1874553323) |

## What reviewers say

### Solution Equilibria Lab

[App page](https://appshunter.io/ios/app/solution-equilibria-lab/id6754339747)

**Features:** Vision Pro support

**In-app purchases:** none


### Touch Trigonometry

[App page](https://appshunter.io/ios/app/touch-trigonometry/id6758712159)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Touch Trigonometry | $4.99 | one-time |


## Frequently asked questions

### Is Solution Equilibria Lab free?

Solution Equilibria Lab is free to download, with no in-app purchases.

### Is Touch Trigonometry free?

Touch Trigonometry is free to download, with in-app purchases available.

### Do Solution Equilibria Lab or Touch Trigonometry have ads?

Neither Solution Equilibria Lab nor Touch Trigonometry 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.*