# Harmonic Analysis vs ゼロ歳からの絶対音感トレーニング

The clearest difference is in-app purchases: ゼロ歳からの絶対音感トレーニング at none against Harmonic Analysis's 3. ゼロ歳からの絶対音感トレーニング also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.6). Harmonic Analysis's advantage is ads (none vs shown) and update cadence (every 2 days vs every 2 weeks). On price there is nothing between them.

Both are free to download. Harmonic Analysis sells 3 in-app purchases, starting at $3.99 per month. ゼロ歳からの絶対音感トレーニング asks for nothing beyond the download.

Harmonic Analysis ships an update every 2 days, ゼロ歳からの絶対音感トレーニング every 2 weeks. The most recent releases landed on November 2, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Harmonic Analysis | ゼロ歳からの絶対音感トレーニング |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (22 ratings)](https://appshunter.io/ios/app/harmonic-analysis-theory/id1366920484/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 86 MB | 31 MB |
| Requires iOS | 17.6 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Deeryard LLC](https://appshunter.io/developer/966765345) | [Yasuhiro Suzuki](https://appshunter.io/developer/1338210842) |

## What reviewers say

### Harmonic Analysis

[App page](https://appshunter.io/ios/app/harmonic-analysis-theory/id1366920484)

Master music theory with interactive exercises focused on chord and Roman numeral analysis. Practice constructing chords, analyzing progressions, and improving your musical ear through various training modes and customizable settings.

**Highlights:** Chord to Roman numeral training, Chord construction exercises, Chord construction with keyboard, Chord progression analysis, Selectable difficulty levels, Support for inverted chords, Performance reports

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access Monthly | $3.99 | per month |
| Premium Access Yearly | $39.99 | per year |
| One-time Payment | $119.99 | one-time |


### ゼロ歳からの絶対音感トレーニング

[App page](https://appshunter.io/ios/app/id1448625623)

**In-app purchases:** none


## Frequently asked questions

### Is Harmonic Analysis free?

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

### Is ゼロ歳からの絶対音感トレーニング free?

ゼロ歳からの絶対音感トレーニング is free to download, with no in-app purchases.

### Do Harmonic Analysis or ゼロ歳からの絶対音感トレーニング have ads?

ゼロ歳からの絶対音感トレーニング shows ads; Harmonic Analysis does not.

### Which is updated more often, Harmonic Analysis or ゼロ歳からの絶対音感トレーニング?

Harmonic Analysis ships an update every 2 days, and ゼロ歳からの絶対音感トレーニング every 2 weeks. Most recently, Harmonic Analysis was updated on November 2, 2026 and ゼロ歳からの絶対音感トレーニング on October 26, 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.*