# Rivet 04 vs Synesthesia Synth

The clearest difference is in-app purchases: Synesthesia Synth at none against Rivet 04's 3. Synesthesia Synth also leads on device support. On price and iOS requirement there is nothing between them.

Both are free to download. Rivet 04 sells 3 one-off in-app purchases. Synesthesia Synth asks for nothing beyond the download.

## The numbers

| Metric | Rivet 04 | Synesthesia Synth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/synesthesia-synth/id6763379132/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | — | Every 10 days |
| Monetization | — | Free |
| Size | 4 MB | 141 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Joe Topjian](https://appshunter.io/developer/1860697112) | [MICHELE ZACCAGNINI](https://appshunter.io/developer/1895288560) |

## What reviewers say

### Rivet 04

[App page](https://appshunter.io/ios/app/rivet-04-comb/id6758967505)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip - Small | $0.99 | one-time |
| Tip - Medium | $1.99 | one-time |
| Tip - Large | $3.99 | one-time |


### 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


## Frequently asked questions

### Is Rivet 04 free?

Rivet 04 is free to download, with in-app purchases available.

### Is Synesthesia Synth free?

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

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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.*