# Chromophone vs Chladni

The clearest difference is in-app purchases: Chromophone at none against Chladni's 1. Chromophone also leads on ads (none vs shown). Chladni's advantage is update cadence (every 10 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Chladni sells 1 one-off in-app purchase. Chromophone asks for nothing beyond the download.

Chromophone ships an update every 3 weeks, Chladni every 10 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Chromophone | Chladni |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Size | 5 MB | 5 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Maxim Oransky](https://appshunter.io/developer/1639941241) | [Takashi Nemoto](https://appshunter.io/developer/6790828928) |

## What reviewers say

### Chromophone

[App page](https://appshunter.io/ios/app/chromophone-music-visualizer/id6790982155)

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

**In-app purchases:** none


### Chladni

[App page](https://appshunter.io/ios/app/chladni-sound-patterns/id6812944446)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads and Watermark | $0.99 | one-time |


## Frequently asked questions

### Is Chromophone free?

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

### Is Chladni free?

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

### Do Chromophone or Chladni have ads?

Chladni shows ads; Chromophone does not.

### Which is updated more often, Chromophone or Chladni?

Chromophone ships an update every 3 weeks, and Chladni every 10 days. Most recently, Chromophone was updated on November 5, 2026 and Chladni on November 10, 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.*