# Peter Vogel CMI vs Synesthesia Synth

The clearest difference is price: Synesthesia Synth at Free against Peter Vogel CMI's $9.99. Synesthesia Synth also leads on rating (5.0 vs 2.5) and in-app purchases (none vs 1). Peter Vogel CMI's advantage is ratings volume (36 vs 2) and iOS requirement (12.1 vs 16.0). On ads and device support there is nothing between them.

Synesthesia Synth is free to download; Peter Vogel CMI costs $9.99 up front. Peter Vogel CMI sells 1 one-off in-app purchase. Synesthesia Synth asks for nothing beyond the download.

Synesthesia Synth holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: Peter Vogel CMI has 36 ratings behind it against 2, so its average is the more settled of the two.

Peter Vogel CMI ships an update every 3 weeks, Synesthesia Synth every 10 days. The most recent releases landed on October 21, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Peter Vogel CMI | Synesthesia Synth |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [2.5 (36 ratings)](https://appshunter.io/ios/app/peter-vogel-cmi/id420212505/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/synesthesia-synth/id6763379132/reviews)** |
| Number of ratings | **36** | 2 |
| Positive reviews | 34.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 83 MB | 141 MB |
| Requires iOS | **12.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Peter Vogel Instruments Pty Ltd](https://appshunter.io/developer/415596514) | [MICHELE ZACCAGNINI](https://appshunter.io/developer/1895288560) |

## What reviewers say

### Peter Vogel CMI

[App page](https://appshunter.io/ios/app/peter-vogel-cmi/id420212505)

Experience the legendary sounds of the 1980s Computer Musical Instrument (CMI) with this retro MIDI player. It offers a byte-perfect re-issue of classic CMI voices and includes a play-only demo of the pioneering 'Page R' rhythm sequencer.

**Highlights:** 500+ legendary CMI sounds, Byte-perfect re-issue of 80s CMI sounds, Play-only demo of Page R sequencer, Browse and play CMI IIX Sounds floppy disk library, Play CMI voices via external MIDI input, On-screen keyboard, Authentic CMI user interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CMI Pro Upgrade | $39.99 | one-time |

**What reviewers like**

- 🎨 Authentic Fairlight sounds
- 🕰️ Nostalgic retro experience
- 🎹 Great for composing and sampling
- 💰 Affordable compared to original hardware

**What reviewers complain about**

- 💸 Expensive for a limited feature set
- 🐛 Crashes and bugs on newer iOS versions
- 📺 Clunky and outdated user interface
- 🔒 Lack of export and sharing options

**Reported bugs**

- Crashes on startup for some users
- Keyboard issues and unresponsive controls
- Incompatibility with newer iOS versions

**Requested features**

- Add more Fairlight Series III sounds
- Improve MIDI and Audiobus integration
- Implement a more modern and intuitive UI
- Add support for odd time signatures


### 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 Peter Vogel CMI free?

Peter Vogel CMI costs $9.99, and also offers in-app purchases.

### Is Synesthesia Synth free?

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

### Which has better reviews, Peter Vogel CMI or Synesthesia Synth?

Synesthesia Synth is rated higher. Peter Vogel CMI averages 2.5 out of 5 from 36 ratings, while Synesthesia Synth averages 5.0 from 2 ratings.

### Do Peter Vogel CMI or Synesthesia Synth have ads?

Neither Peter Vogel CMI nor Synesthesia Synth shows ads.

### Which is updated more often, Peter Vogel CMI or Synesthesia Synth?

Peter Vogel CMI ships an update every 3 weeks, and Synesthesia Synth every 10 days. Most recently, Peter Vogel CMI was updated on October 21, 2026 and Synesthesia Synth on October 3, 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.*