# ClefMastery vs Clef

The clearest difference is device support: ClefMastery at 4 against Clef's 2. ClefMastery also leads on iOS requirement (13.0 vs 26.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. ClefMastery sells 1 one-off in-app purchase and Clef sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ClefMastery ships an update every 5 days, Clef every 3 days. The most recent releases landed on September 13, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | ClefMastery | Clef |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Size | 20 MB | 11 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Michaelis](https://appshunter.io/developer/902580084) | [Mel Owen](https://appshunter.io/developer/1674940249) |

## What reviewers say

### ClefMastery

[App page](https://appshunter.io/ios/app/clefmastery/id6759814155)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ClefMastery Lifetime Unlock | $9.99 | one-time |


### Clef

[App page](https://appshunter.io/ios/app/clef-sight-reading-trainer/id6768969191)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Clef | $9.99 | one-time |
| Clef Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is ClefMastery free?

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

### Is Clef free?

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

### Do ClefMastery or Clef have ads?

Neither ClefMastery nor Clef shows ads.

### Which is updated more often, ClefMastery or Clef?

ClefMastery ships an update every 5 days, and Clef every 3 days. Most recently, ClefMastery was updated on September 13, 2026 and Clef on September 8, 2026.

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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.*