# Harmonic Explorer vs Ear Training L3

The clearest difference is price: Harmonic Explorer at $0.99 against Ear Training L3's $7.99. Harmonic Explorer also leads on iOS requirement (15.6 vs 17.0). Ear Training L3's advantage is update cadence (every 5 days vs every 7 months). On ads, in-app purchases and device support there is nothing between them.

Harmonic Explorer costs $0.99 and Ear Training L3 $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Harmonic Explorer ships an update every 7 months, Ear Training L3 every 5 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Harmonic Explorer | Ear Training L3 |
| --- | --- | --- |
| Price | **$0.99** | $7.99 |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ear-training-l3-the-moons/id6760356899/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | — | Paid |
| Size | 2 MB | 32 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Philippe Zay](https://appshunter.io/developer/1200498230) | [Paul Russell](https://appshunter.io/developer/1883542878) |

## What reviewers say

### Harmonic Explorer

[App page](https://appshunter.io/ios/app/harmonic-explorer/id6747025974)

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

**In-app purchases:** none


### Ear Training L3

[App page](https://appshunter.io/ios/app/ear-training-l3-the-moons/id6760356899)

Explore and internalize chords and progressions with this interactive ear training app. Hear diatonic chords and custom progressions against a vocal drone, and test your knowledge with challenging modes. Works offline with adjustable settings.

**Highlights:** Interactive moons diagram for chords, Chord progression designer, Two test modes (Chords & Progressions), 12 tonal centers and 5 modes, Adjustable drone/chord mix balance, Works offline

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

**In-app purchases:** none


## Frequently asked questions

### Is Harmonic Explorer free?

Harmonic Explorer costs $0.99, with no in-app purchases.

### Is Ear Training L3 free?

Ear Training L3 costs $7.99, with no in-app purchases.

### Do Harmonic Explorer or Ear Training L3 have ads?

Neither Harmonic Explorer nor Ear Training L3 shows ads.

### Which is updated more often, Harmonic Explorer or Ear Training L3?

Harmonic Explorer ships an update every 7 months, and Ear Training L3 every 5 days. Most recently, Harmonic Explorer was updated on October 30, 2026 and Ear Training L3 on October 31, 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.*