# e vs Touch Trigonometry

The clearest difference is in-app purchases: e at none against Touch Trigonometry's 1. On price, ads, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | e | Touch Trigonometry |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 9 MB | 48 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ebyteafrica](https://appshunter.io/developer/1847146300) | [Aisatsu LLC](https://appshunter.io/developer/1874553323) |

## What reviewers say

### e

[App page](https://appshunter.io/ios/app/e-byte-africa/id6754216597)

**Features:** macOS Compatibility

**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 e free?

e 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 e or Touch Trigonometry have ads?

Neither e 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.*