# Innovation Loop vs Touch Trigonometry

The clearest difference is in-app purchases: Innovation Loop at none against Touch Trigonometry's 1. Touch Trigonometry's advantage is iOS requirement (15.1 vs 18.2). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | Innovation Loop | Touch Trigonometry |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Size | 88 MB | 48 MB |
| Requires iOS | 18.2 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [California State University, Northridge](https://appshunter.io/developer/677332864) | [Aisatsu LLC](https://appshunter.io/developer/1874553323) |

## What reviewers say

### Innovation Loop

[App page](https://appshunter.io/ios/app/innovation-loop/id6749651668)

**Features:** macOS Compatibility, 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 Innovation Loop free?

Innovation Loop 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 Innovation Loop or Touch Trigonometry have ads?

Neither Innovation Loop 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.*