# Interval Ear Training vs ZZZ FretHarmony

The clearest difference is ads: Interval Ear Training at none against ZZZ FretHarmony's shown. Interval Ear Training also leads on iOS requirement (12.0 vs 16.3). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Interval Ear Training sells 1 one-off in-app purchase and ZZZ FretHarmony sells 1 in-app purchase, starting at $1.99 per year. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Interval Ear Training | ZZZ FretHarmony |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (367 ratings)](https://appshunter.io/ios/app/interval-ear-training/id361125793/reviews)** | — |
| Number of ratings | **367** | — |
| Positive reviews | 88.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 295 MB | 28 MB |
| Requires iOS | **12.0** | 16.3 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [262Hz](https://appshunter.io/developer/950924827) | [SMOLT STAGE, K.K.](https://appshunter.io/developer/1708601451) |

## What reviewers say

### Interval Ear Training

[App page](https://appshunter.io/ios/app/interval-ear-training/id361125793)

Develop your musical ear with this interactive piano game. It helps improve interval recognition, pitch sense, and transcription skills through engaging exercises. Suitable for both beginners and experienced musicians.

**Highlights:** Interval recognition practice, Sense of pitch development, Transcription skill improvement, Improvisation skill enhancement, MIDI keyboard integration, Customizable tempo and keyboard range

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Settings | $9.99 | one-time |

**What reviewers like**

- 👍 Simple and intuitive user interface
- 🎵 Effective ear training tool for interval recognition
- 🎹 Visual keyboard display aids learning
- 📊 Progress tracking with running success score
- 🔊 High-quality audio output

**What reviewers complain about**

- 🖱️ Excessive clicks required between intervals
- ⚙️ Limited customization options
- 🎵 Fixed to C major key only
- 🔄 Cannot fix first note for consistent practice
- 📊 Cumulative score cannot be reset per session

**Reported bugs**

- App freezes after first interval (iOS 8.1 compatibility issue)
- App stops responding and doesn't progress to next interval
- Sound fails after alarm interruption
- Chromatic mode prevents sounds from playing
- Delayed iOS support updates

**Requested features**

- Ability to fix first note and practice all intervals from one tonic
- Customize intervals tested (major only, minor only, specific intervals like 2nd, 3rd, tritone)
- Auto-play next interval without requiring additional clicks
- Support for sharps and flats
- Other musical keys beyond C major


### ZZZ FretHarmony

[App page](https://appshunter.io/ios/app/zzz-fretharmony/id6806733979)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZZZ FretHarmony Pro | $1.99 | per year |


## Frequently asked questions

### Is Interval Ear Training free?

Interval Ear Training is free to download, with in-app purchases available.

### Is ZZZ FretHarmony free?

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

### Do Interval Ear Training or ZZZ FretHarmony have ads?

ZZZ FretHarmony shows ads; Interval Ear Training does not.

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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.*