# Music Theory vs Quick Theory

The clearest difference is in-app purchases: Music Theory at none against Quick Theory's 3. Music Theory also leads on iOS requirement (15.6 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Quick Theory sells 3 in-app purchases, starting at $4.99 per month. Music Theory asks for nothing beyond the download.

## The numbers

| Metric | Music Theory | Quick Theory |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 4 MB | 87 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Musical Note Studio](https://appshunter.io/developer/1895059915) | [HANOCH YOSEF LIB](https://appshunter.io/developer/6788600007) |

## What reviewers say

### Music Theory

[App page](https://appshunter.io/ios/app/music-theorycracking-the-code/id6762886683)

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

**In-app purchases:** none


### Quick Theory

[App page](https://appshunter.io/ios/app/quick-theory/id6790213145)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $29.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Music Theory free?

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

### Is Quick Theory free?

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

### Do Music Theory or Quick Theory have ads?

Neither Music Theory nor Quick Theory 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.*