# caTTho vs ScaleSpin

The clearest difference is in-app purchases: ScaleSpin at none against caTTho's 1. ScaleSpin also leads on iOS requirement (16.4 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. caTTho sells 1 one-off in-app purchase. ScaleSpin asks for nothing beyond the download.

## The numbers

| Metric | caTTho | ScaleSpin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/scalespin/id6778778091/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Monetization | — | Paid |
| Size | 13 MB | 38 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vlastimil Stefl](https://appshunter.io/developer/1447495739) | [Shuo Yang](https://appshunter.io/developer/6778778093) |

## What reviewers say

### caTTho

[App page](https://appshunter.io/ios/app/cattho/id1559044904)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium fatures | $0.99 | one-time |


### ScaleSpin

[App page](https://appshunter.io/ios/app/scalespin/id6778778091)

This app simplifies daily scale practice for musicians by randomly selecting scales. It aims to make practicing more engaging and enjoyable, inspired by dedicated music teachers.

**Highlights:** Random scale selection, Simplified practice routine, Engaging practice experience, Dedicated to music teachers

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is caTTho free?

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

### Is ScaleSpin free?

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

### Do caTTho or ScaleSpin have ads?

Neither caTTho nor ScaleSpin 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.*