# Touch Tonnetz vs SetClass

The clearest difference is price: Touch Tonnetz at Free against SetClass's $4.99. Touch Tonnetz also leads on update cadence (every 2 weeks vs every 2 months) and device support (4 vs 2). SetClass's advantage is in-app purchases (none vs 1). On ads there is nothing between them.

Touch Tonnetz is free to download; SetClass costs $4.99 up front. Touch Tonnetz sells 1 one-off in-app purchase. SetClass asks for nothing beyond the download.

Touch Tonnetz ships an update every 2 weeks, SetClass every 2 months. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Touch Tonnetz | SetClass |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[3.5 (4 ratings)](https://appshunter.io/ios/app/touch-tonnetz/id1176422445/reviews)** | — |
| Number of ratings | **4** | — |
| 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 | — |
| Size | 87 MB | 88 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Michaelis](https://appshunter.io/developer/902580084) | [Martin Adler](https://appshunter.io/developer/1896354791) |

## 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 |


### SetClass

[App page](https://appshunter.io/ios/app/setclass/id6785144247)

**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 SetClass free?

SetClass costs $4.99, with no in-app purchases.

### Do Touch Tonnetz or SetClass have ads?

Neither Touch Tonnetz nor SetClass shows ads.

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

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