# Sonofield Ear Trainer vs Open Studio Jazz

The clearest difference is ratings volume: Sonofield Ear Trainer at 376 against Open Studio Jazz's 5. Sonofield Ear Trainer also leads on iOS requirement (13.0 vs 15.1). Open Studio Jazz's advantage is review sentiment (100% vs 89%). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Sonofield Ear Trainer sells 4 one-off in-app purchases and Open Studio Jazz sells 4 in-app purchases, starting at $39.00 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Sonofield Ear Trainer against 5.0 for Open Studio Jazz. That said, the two scores are not equally well evidenced: Sonofield Ear Trainer has 376 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 89% of Sonofield Ear Trainer's written reviews are positive against 100% of Open Studio Jazz's.

Sonofield Ear Trainer ships an update every 9 days, Open Studio Jazz every 5 days. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Sonofield Ear Trainer | Open Studio Jazz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (376 ratings)](https://appshunter.io/ios/app/sonofield-ear-trainer/id6740409139/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/open-studio-jazz/id6752910402/reviews)** |
| Number of ratings | **376** | 5 |
| Positive reviews | 88.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 105 MB | 51 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sonofield Ear Trainer Education Ltd.](https://appshunter.io/developer/1789801335) | [Open Studio Network LLC](https://appshunter.io/developer/1841397358) |

## What reviewers say

### Sonofield Ear Trainer

[App page](https://appshunter.io/ios/app/sonofield-ear-trainer/id6740409139)

This app helps musicians develop their ear by focusing on the feeling of individual notes within a key, rather than traditional interval training. It uses sustained drones and offers various modes like identifying scale degrees, melodies, and singing exercises. The app adapts to your skill level with an intuitive interface and progression path.

**Highlights:** Feeling-based note recognition, Scale degree identification, Melody recognition training, Singing exercises, Hands-free training mode, Interactive exploration instrument

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $14.99 | one-time |
| Lifetime Pro | $17.99 | one-time |
| Lifetime Pro | $19.99 | one-time |
| Lifetime Pro | $24.99 | one-time |

**What reviewers like**

- 🚀 Excellent ear training tool
- 👍 Intuitive and user-friendly design
- 🎶 Effective for improving relative pitch
- 💡 Innovative use of drone and scale degrees
- 🎯 Helpful for aural skills development

**What reviewers complain about**

- 🤔 Challenging for true beginners
- 💭 Desire for more customization options

**Reported bugs**

- None reported

**Requested features**

- Option to switch between 12TET and just intonation
- Ability to reduce octave range
- Incorporate more timbre options for drone and notes
- Tracking and visualization of progress and learned skills
- Add interactive tutorial for level 1


### 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 Sonofield Ear Trainer free?

Sonofield Ear Trainer is free to download, with in-app purchases available.

### Is Open Studio Jazz free?

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

### Which has better reviews, Sonofield Ear Trainer or Open Studio Jazz?

Open Studio Jazz is rated higher. Sonofield Ear Trainer averages 4.9 out of 5 from 376 ratings, while Open Studio Jazz averages 5.0 from 5 ratings.

### Do Sonofield Ear Trainer or Open Studio Jazz have ads?

Neither Sonofield Ear Trainer nor Open Studio Jazz shows ads.

### Which is updated more often, Sonofield Ear Trainer or Open Studio Jazz?

Sonofield Ear Trainer ships an update every 9 days, and Open Studio Jazz every 5 days. Most recently, Sonofield Ear Trainer 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.*