# Synesthesia Synth vs Arc & Decay

The clearest difference is update cadence: Arc & Decay at daily against Synesthesia Synth's every 10 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Synesthesia Synth ships an update every 10 days, Arc & Decay daily. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Synesthesia Synth | Arc & Decay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/synesthesia-synth/id6763379132/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Daily** |
| Monetization | Free | — |
| Size | 141 MB | 11 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MICHELE ZACCAGNINI](https://appshunter.io/developer/1895288560) | [Tash Baycroft](https://appshunter.io/developer/6779379023) |

## What reviewers say

### Synesthesia Synth

[App page](https://appshunter.io/ios/app/synesthesia-synth/id6763379132)

An experimental audio-visual instrument that allows users to sculpt evolving spatial audio by manipulating floating capsules. Position, rotation, and pulse changes affect tone, texture, and synchronized particle generation. It's a visual synthesizer, not a game.

**Highlights:** Experimental audio-visual instrument, Sculpt evolving spatial audio, Manipulate floating capsules, Control tone, texture, and particles, Visual synthesizer

**In-app purchases:** none


### Arc & Decay

[App page](https://appshunter.io/ios/app/arc-and-decay/id6779379021)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Synesthesia Synth free?

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

### Is Arc & Decay free?

Arc & Decay is free to download, with no in-app purchases.

### Do Synesthesia Synth or Arc & Decay have ads?

Neither Synesthesia Synth nor Arc & Decay shows ads.

### Which is updated more often, Synesthesia Synth or Arc & Decay?

Synesthesia Synth ships an update every 10 days, and Arc & Decay daily. Most recently, Synesthesia Synth was updated on October 19, 2026 and Arc & Decay on October 25, 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.*