# Touch Tonnetz vs Serphonica

The clearest difference is rating: Serphonica at 5.0 against Touch Tonnetz's 3.5. Serphonica also leads on in-app purchases (none vs 1). Touch Tonnetz's advantage is update cadence (every 2 weeks vs every 2 months) and ratings volume (4 vs 1). On price and ads there is nothing between them.

Both are free to download. Touch Tonnetz sells 1 one-off in-app purchase. Serphonica asks for nothing beyond the download.

Serphonica holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Touch Tonnetz ships an update every 2 weeks, Serphonica every 2 months. Both last shipped on October 1, 2026.

## The numbers

| Metric | Touch Tonnetz | Serphonica |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (4 ratings)](https://appshunter.io/ios/app/touch-tonnetz/id1176422445/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/serphonica/id6759585139/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 87 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Michaelis](https://appshunter.io/developer/902580084) | [Joshua Rideout](https://appshunter.io/developer/1862462443) |

## 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 |


### Serphonica

[App page](https://appshunter.io/ios/app/serphonica/id6759585139)

Develop your musical ear with a comprehensive suite of training exercises and practice tools. Features include interval and chord recognition, scale training, rhythm echo, and sight-reading. Includes a chromatic tuner, metronome, and live fretboard.

**Highlights:** Interval training, Chord recognition, Scale trainer, Rhythm echo, Chromatic tuner, Metronome, Live fretboard

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

**In-app purchases:** none


## Frequently asked questions

### Is Touch Tonnetz free?

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

### Is Serphonica free?

Serphonica is free to download, with no in-app purchases.

### Which has better reviews, Touch Tonnetz or Serphonica?

Serphonica is rated higher. Touch Tonnetz averages 3.5 out of 5 from 4 ratings, while Serphonica averages 5.0 from 1 ratings.

### Do Touch Tonnetz or Serphonica have ads?

Neither Touch Tonnetz nor Serphonica shows ads.

### Which is updated more often, Touch Tonnetz or Serphonica?

Touch Tonnetz ships an update every 2 weeks, and Serphonica every 2 months. Most recently, Touch Tonnetz was updated on October 1, 2026 and Serphonica on October 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.*