# Touch Trigonometry vs Clean Reader

The clearest difference is in-app purchases: Clean Reader 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. Clean Reader asks for nothing beyond the download.

## The numbers

| Metric | Touch Trigonometry | Clean Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/clean-reader-learn-to-read/id6759177993/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | — | Paid |
| Size | 48 MB | 61 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Aisatsu LLC](https://appshunter.io/developer/1874553323) | [Pensieve Labs](https://appshunter.io/developer/1680659027) |

## What reviewers say

### 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 |


### Clean Reader

[App page](https://appshunter.io/ios/app/clean-reader-learn-to-read/id6759177993)

This phonics app uses a Montessori-aligned approach to help children aged 3-6 learn to read. It focuses on synthetic phonics and a distraction-free learning environment, offering a calm alternative to overstimulating educational games.

**Highlights:** Montessori-aligned phonics, Distraction-free learning, Synthetic phonics sequence (SATPIN), Sound blending sandbox, Decodable stories, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Touch Trigonometry free?

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

### Is Clean Reader free?

Clean Reader is free to download, with no in-app purchases.

### Do Touch Trigonometry or Clean Reader have ads?

Neither Touch Trigonometry nor Clean Reader 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.*