# Peter Vogel CMI vs Sequencer Rack 2

The clearest difference is rating: Peter Vogel CMI at 2.5 against Sequencer Rack 2's 1.0. Peter Vogel CMI also leads on update cadence (every 3 weeks vs every 91 months) and ratings volume (36 vs 1). Sequencer Rack 2's advantage is price ($3.99 vs $9.99) and review sentiment (50% vs 35%). On ads, in-app purchases and device support there is nothing between them.

Peter Vogel CMI costs $9.99 and Sequencer Rack 2 $3.99 up front. Peter Vogel CMI sells 1 one-off in-app purchase and Sequencer Rack 2 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Peter Vogel CMI holds the better App Store score, 2.5 against 1.0. That said, the two scores are not equally well evidenced: Peter Vogel CMI has 36 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 35% of Peter Vogel CMI's written reviews are positive against 50% of Sequencer Rack 2's, so the app with the better star average is not the one people write more warmly about.

Peter Vogel CMI ships an update every 3 weeks, Sequencer Rack 2 every 91 months. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Peter Vogel CMI | Sequencer Rack 2 |
| --- | --- | --- |
| Price | $9.99 | **$3.99** |
| Rating | **[2.5 (36 ratings)](https://appshunter.io/ios/app/peter-vogel-cmi/id420212505/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/sequencer-rack-2-groovebox/id1455851982/reviews) |
| Number of ratings | **36** | 1 |
| Positive reviews | 34.7% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 91 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#182** | — |
| Size | 83 MB | 14 MB |
| Requires iOS | **12.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peter Vogel Instruments Pty Ltd](https://appshunter.io/developer/415596514) | [Aleksandar Mlazev](https://appshunter.io/developer/1093798140) |

## What reviewers say

### Peter Vogel CMI

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

**Currently charting:** #182 Top Paid · Music (US App Store)

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


### Sequencer Rack 2

[App page](https://appshunter.io/ios/app/sequencer-rack-2-groovebox/id1455851982)

Create music and beats with a vintage-inspired step sequencer. Features 16 distinct sounds, chord progressions, and effects. Export your creations as WAV files.

**Highlights:** 16 distinct vintage sounds, Chord progressions in C major, Melody pads, Two audio effects, Export to WAV, Sound pitch and volume control, Loop playback

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sequencer Rack 2 unlock export | $1.99 | one-time |


## Frequently asked questions

### Is Peter Vogel CMI free?

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

### Is Sequencer Rack 2 free?

Sequencer Rack 2 costs $3.99, and also offers in-app purchases.

### Which has better reviews, Peter Vogel CMI or Sequencer Rack 2?

Peter Vogel CMI is rated higher. Peter Vogel CMI averages 2.5 out of 5 from 36 ratings, while Sequencer Rack 2 averages 1.0 from 1 ratings.

### Do Peter Vogel CMI or Sequencer Rack 2 have ads?

Neither Peter Vogel CMI nor Sequencer Rack 2 shows ads.

### Which is updated more often, Peter Vogel CMI or Sequencer Rack 2?

Peter Vogel CMI ships an update every 3 weeks, and Sequencer Rack 2 every 91 months. Most recently, Peter Vogel CMI was updated on October 28, 2026 and Sequencer Rack 2 on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*