# Harmonomics Ear Training vs Open Studio Jazz

The clearest difference is price: Open Studio Jazz at Free against Harmonomics Ear Training's $9.99. Open Studio Jazz also leads on rating (5.0 vs 4.7) and review sentiment (100% vs 85%). Harmonomics Ear Training's advantage is in-app purchases (none vs 4) and ratings volume (26 vs 5). On update cadence, ads and device support there is nothing between them.

Open Studio Jazz is free to download; Harmonomics Ear Training costs $9.99 up front. Open Studio Jazz sells 4 in-app purchases, starting at $39.00 per month. Harmonomics Ear Training asks for nothing beyond the download.

Open Studio Jazz holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Harmonomics Ear Training has 26 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 85% of Harmonomics Ear Training's written reviews are positive against 100% of Open Studio Jazz's.

Harmonomics Ear Training ships an update every 10 days, Open Studio Jazz every 5 days. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Harmonomics Ear Training | Open Studio Jazz |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.7 (26 ratings)](https://appshunter.io/ios/app/harmonomics-ear-training/id993814328/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/open-studio-jazz/id6752910402/reviews)** |
| Number of ratings | **26** | 5 |
| Positive reviews | 85.2% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 52 MB | 51 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Nastos](https://appshunter.io/developer/422681741) | [Open Studio Network LLC](https://appshunter.io/developer/1841397358) |

## What reviewers say

### Harmonomics Ear Training

[App page](https://appshunter.io/ios/app/harmonomics-ear-training/id993814328)

This tool helps musicians of all levels improve their auditory skills. It offers a wide range of customizable exercises for identifying intervals, melodies, chords, and progressions, with detailed statistics and motivational achievements.

**Highlights:** 50+ customizable exercises, Extensive chord library with inversions, Creative exercises beyond basic identification, Detailed statistics and progress reports, Motivational achievements, Supports interval, melody, chord, and scale training

**Features:** Vision Pro support

**In-app purchases:** none


### Open Studio Jazz

[App page](https://appshunter.io/ios/app/open-studio-jazz/id6752910402)

This platform offers guided jazz education for all skill levels, featuring weekly lessons on real jazz standards and pathways for practice. Learn from renowned jazz musicians and track your progress across devices.

**Highlights:** Weekly new jazz standard lessons, Guided practice pathways, Courses by legendary jazz musicians, Progress tracking across devices, Beginner to advanced levels, Full library of technique, theory, and improvisation courses

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Open Studio (Monthly) | $39.00 | per month |
| Open Studio Pro (Monthly) | $97.00 | per month |
| Open Studio (Annual) | $390.00 | per year |
| Open Studio Pro (Annual) | $559.99 | per year |


## Frequently asked questions

### Is Harmonomics Ear Training free?

Harmonomics Ear Training costs $9.99, with no in-app purchases.

### Is Open Studio Jazz free?

Open Studio Jazz is free to download, with in-app purchases available.

### Which has better reviews, Harmonomics Ear Training or Open Studio Jazz?

Open Studio Jazz is rated higher. Harmonomics Ear Training averages 4.7 out of 5 from 26 ratings, while Open Studio Jazz averages 5.0 from 5 ratings.

### Do Harmonomics Ear Training or Open Studio Jazz have ads?

Neither Harmonomics Ear Training nor Open Studio Jazz shows ads.

### Which is updated more often, Harmonomics Ear Training or Open Studio Jazz?

Harmonomics Ear Training ships an update every 10 days, and Open Studio Jazz every 5 days. Most recently, Harmonomics Ear Training was updated on October 14, 2026 and Open Studio Jazz on October 13, 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.*