# Clefs vs Intervalia

Clefs and Intervalia are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Clefs sells 1 one-off in-app purchase and Intervalia sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Clefs ships an update weekly, Intervalia every 3 days. Both last shipped on October 4, 2026.

## The numbers

| Metric | Clefs | Intervalia |
| --- | --- | --- |
| 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 | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 25 MB | 4 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Crazy Ootka Software AB](https://appshunter.io/developer/1440768352) | [Kostya Blokhin](https://appshunter.io/developer/829724783) |

## What reviewers say

### 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 |


### Intervalia

[App page](https://appshunter.io/ios/app/intervalia-ear-training/id6816402990)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small thanks | $0.99 | one-time |
| Thanks | $2.99 | one-time |
| Big thanks | $4.99 | one-time |


## Frequently asked questions

### Is Clefs free?

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

### Is Intervalia free?

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

### Do Clefs or Intervalia have ads?

Neither Clefs nor Intervalia shows ads.

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

Clefs ships an update weekly, and Intervalia every 3 days. Most recently, Clefs was updated on October 4, 2026 and Intervalia 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.*