# Harmonic Analysis vs Primo

The clearest difference is update cadence: Harmonic Analysis at every 2 days against Primo's monthly. Primo's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.6). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Harmonic Analysis sells 3 in-app purchases, starting at $3.99 per month and Primo sells 9 in-app purchases, starting at $3.49 per month. Whichever you choose, the download price is not the number that matters.

Harmonic Analysis ships an update every 2 days, Primo monthly. The most recent releases landed on September 18, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Harmonic Analysis | Primo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (22 ratings)](https://appshunter.io/ios/app/harmonic-analysis-theory/id1366920484/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Monthly |
| Monetization | Freemium | Free with in-app purchases |
| Size | 84 MB | 258 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Deeryard LLC](https://appshunter.io/developer/966765345) | [INTERNATIONAL LABORATORY OF MUSIC EDUCATION](https://appshunter.io/developer/1493879437) |

## 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 | $159.99 | one-time |


### Primo

[App page](https://appshunter.io/ios/app/primo/id1493879438)

This app offers dailyソルフェージュ exercises to build fundamental music skills like reading sheet music, identifying pitches by ear, and understanding rhythm. It aims to make music education accessible and affordable for everyone, regardless of location or prior experience.

**Highlights:** Sheet music reading practice, Ear training exercises, Rhythm and timing drills, Sight-reading simulations, Music history and appreciation content, Specialized theory problem collections

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 読譜（どくふ） | $3.49 | per month |
| 初見（しょけん） | $3.49 | per month |
| リズム | $3.49 | per month |
| 聴音（ちょうおん） | $3.49 | per month |
| まとめ買い | $13.99 | per month |
| シュトラウス | $0.99 | one-time |
| 山田耕筰 | $0.99 | one-time |
| ドビュッシー | $0.99 | one-time |
| シベリウス | $0.99 | one-time |


## Frequently asked questions

### Is Harmonic Analysis free?

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

### Is Primo free?

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

### Do Harmonic Analysis or Primo have ads?

Neither Harmonic Analysis nor Primo shows ads.

### Which is updated more often, Harmonic Analysis or Primo?

Harmonic Analysis ships an update every 2 days, and Primo monthly. Most recently, Harmonic Analysis was updated on September 18, 2026 and Primo on June 1, 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.*