# ClefMastery vs SightPiano

The clearest difference is iOS requirement: ClefMastery at 13.0 against SightPiano's 15.0. 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 SightPiano sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ClefMastery ships an update every 5 days, SightPiano every 6 days. The most recent releases landed on October 17, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | ClefMastery | SightPiano |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 6 days |
| Size | 20 MB | 517 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Michaelis](https://appshunter.io/developer/902580084) | [Original Device LLC](https://appshunter.io/developer/1508858790) |

## 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 |


### SightPiano

[App page](https://appshunter.io/ios/app/sightpiano/id6797168851)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Continued Study | $2.99 | per month |


## Frequently asked questions

### Is ClefMastery free?

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

### Is SightPiano free?

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

### Do ClefMastery or SightPiano have ads?

Neither ClefMastery nor SightPiano shows ads.

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

ClefMastery ships an update every 5 days, and SightPiano every 6 days. Most recently, ClefMastery was updated on October 17, 2026 and SightPiano on October 29, 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.*