# Touch Tonnetz vs Sonofield Ear Trainer

The clearest difference is review sentiment: Sonofield Ear Trainer at 89% against Touch Tonnetz's 33%. Sonofield Ear Trainer also leads on rating (4.9 vs 3.5) and ratings volume (376 vs 4). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Touch Tonnetz sells 1 one-off in-app purchase and Sonofield Ear Trainer sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Sonofield Ear Trainer holds the better App Store score, 4.9 against 3.5. That said, the two scores are not equally well evidenced: Sonofield Ear Trainer has 376 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 33% of Touch Tonnetz's written reviews are positive against 89% of Sonofield Ear Trainer's.

Touch Tonnetz ships an update every 2 weeks, Sonofield Ear Trainer every 9 days. The most recent releases landed on October 1, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Touch Tonnetz | Sonofield Ear Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (4 ratings)](https://appshunter.io/ios/app/touch-tonnetz/id1176422445/reviews) | **[4.9 (376 ratings)](https://appshunter.io/ios/app/sonofield-ear-trainer/id6740409139/reviews)** |
| Number of ratings | 4 | **376** |
| Positive reviews | 33.3% of reviews | **88.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 87 MB | 105 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Michaelis](https://appshunter.io/developer/902580084) | [Sonofield Ear Trainer Education Ltd.](https://appshunter.io/developer/1789801335) |

## What reviewers say

### Touch Tonnetz

[App page](https://appshunter.io/ios/app/touch-tonnetz/id1176422445)

Explore Neo-Riemannian music theory with an interactive tonal lattice. Hear chords and notes, visualize harmonic transformations, and build custom progressions. Offers multiple instrument sounds and color schemes for a hands-on theoretical exploration.

**Highlights:** Interactive Tonnetz visualization, Real-time harmonic analysis, Progression builder, Custom chord creation, Multiple instrument sets, Pinch-to-zoom functionality

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Touch Tonnetz Forever | $9.99 | one-time |


### 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


## Frequently asked questions

### Is Touch Tonnetz free?

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

### Is Sonofield Ear Trainer free?

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

### Which has better reviews, Touch Tonnetz or Sonofield Ear Trainer?

Sonofield Ear Trainer is rated higher. Touch Tonnetz averages 3.5 out of 5 from 4 ratings, while Sonofield Ear Trainer averages 4.9 from 376 ratings.

### Do Touch Tonnetz or Sonofield Ear Trainer have ads?

Neither Touch Tonnetz nor Sonofield Ear Trainer shows ads.

### Which is updated more often, Touch Tonnetz or Sonofield Ear Trainer?

Touch Tonnetz ships an update every 2 weeks, and Sonofield Ear Trainer every 9 days. Most recently, Touch Tonnetz was updated on October 1, 2026 and Sonofield Ear Trainer on October 17, 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.*