# Musa vs Clefs

The clearest difference is in-app purchases: Musa at none against Clefs's 1. Musa also leads on iOS requirement (13.0 vs 18.0). Clefs's advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

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

Musa ships an update every 2 months, Clefs weekly. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Musa | Clefs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/clefs-note-reading-trainer/id6793227835/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 29 MB | 25 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aleksandr Volkov](https://appshunter.io/developer/1895391644) | [Crazy Ootka Software AB](https://appshunter.io/developer/1440768352) |

## What reviewers say

### Musa

[App page](https://appshunter.io/ios/app/musa-note-reading-game/id6763593178)

**Features:** macOS Compatibility

**In-app purchases:** none


### Clefs

[App page](https://appshunter.io/ios/app/clefs-note-reading-trainer/id6793227835)

Master sheet music reading with daily exercises and a guided course. This app helps you instantly recognize notes across all clefs, from beginner to advanced levels. Practice reading and writing notes, track your progress, and even connect a MIDI keyboard.

**Highlights:** Step-by-step guided course, Smart spaced review practice, Reading and writing drills, Support for all ten clefs, MIDI keyboard connectivity, Built-in music theory guide

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clefs Premium | $6.99 | one-time |


## Frequently asked questions

### Is Musa free?

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

### Is Clefs free?

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

### Do Musa or Clefs have ads?

Neither Musa nor Clefs shows ads.

### Which is updated more often, Musa or Clefs?

Musa ships an update every 2 months, and Clefs weekly. Most recently, Musa was updated on October 2, 2026 and Clefs on October 4, 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.*