# Thesys vs OCTACHRON MIDI Drum Sequencer

The clearest difference is price: Thesys at Free against OCTACHRON MIDI Drum Sequencer's $9.99. OCTACHRON MIDI Drum Sequencer's advantage is in-app purchases (none vs 1) and review sentiment (81% vs 59%). On rating, ratings volume, update cadence and ads there is nothing between them.

Thesys is free to download; OCTACHRON MIDI Drum Sequencer costs $9.99 up front. Thesys sells 1 one-off in-app purchase. OCTACHRON MIDI Drum Sequencer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Thesys against 4.6 for OCTACHRON MIDI Drum Sequencer. Both are backed by a comparable volume of ratings — 85 and 106 respectively. Written reviews are what separate them: 59% of Thesys's written reviews are positive against 81% of OCTACHRON MIDI Drum Sequencer's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Thesys | OCTACHRON MIDI Drum Sequencer |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.7 (85 ratings)](https://appshunter.io/ios/app/thesys/id655513441/reviews)** | [4.6 (106 ratings)](https://appshunter.io/ios/app/octachron-midi-drum-sequencer/id1453137215/reviews) |
| Number of ratings | 85 | **106** |
| Positive reviews | 59.3% of reviews | **81.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 29 MB | 12 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sugar Bytes GmbH](https://appshunter.io/developer/614418826) | [Markus Teufel](https://appshunter.io/developer/1104803847) |

## What reviewers say

### Thesys

[App page](https://appshunter.io/ios/app/thesys/id655513441)

This app is a powerful and intuitive MIDI step sequencer for creating complex musical patterns. It offers extensive control over MIDI devices, enabling organic bass lines, leads, and pads for studio or live performance. Advanced features allow for real-time pattern manipulation directly from a MIDI keyboard.

**Highlights:** MIDI Step Sequencer, Pattern Creation, Live Performance Options, Real-time Pattern Manipulation, Integrated Synth, Action Section (Gatetime, Looper, Slowdown), Ableton Link Support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thesys Full Version | $19.99 | one-time |


### OCTACHRON MIDI Drum Sequencer

[App page](https://appshunter.io/ios/app/octachron-midi-drum-sequencer/id1453137215)

This app is a flexible MIDI drum sequencer for iOS, offering up to 16 tracks with advanced modulation and sequencing. It can be used standalone or as an AUv3 plugin in DAWs, and is optimized for drums but also suitable for melodies. It requires iOS 12 or higher.

**Highlights:** 16 mutable tracks, AUv3 MIDI plugin, Standalone operation, Parameter locking, Smart randomizer, Chainable patterns, Custom time signatures

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

**In-app purchases:** none

**What reviewers like**

- 👍 Intuitive and easy to use
- 💡 Powerful and versatile sequencer
- 🚀 Produces results quickly
- 🌟 Great for drum patterns
- 🎛️ Excellent modulation options

**What reviewers complain about**

- 🐛 Pattern change via MIDI difficult
- ❓ Clock div issues reported
- 💡 Missing touchable pads
- ❓ No sound output reported
- 🐛 Projects broken by update

**Reported bugs**

- Clock div issues reported
- No sound output reported
- Projects broken by update
- Skipping first note on pattern change
- GUI glitchy/choppy

**Requested features**

- Add touchable pads
- Add MIDI Step record feature
- Add triplets
- Add MIDI file export and import
- Add system-wide preset save and load


## Frequently asked questions

### Is Thesys free?

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

### Is OCTACHRON MIDI Drum Sequencer free?

OCTACHRON MIDI Drum Sequencer costs $9.99, with no in-app purchases.

### Which has better reviews, Thesys or OCTACHRON MIDI Drum Sequencer?

Thesys is rated higher. Thesys averages 4.7 out of 5 from 85 ratings, while OCTACHRON MIDI Drum Sequencer averages 4.6 from 106 ratings.

### Do Thesys or OCTACHRON MIDI Drum Sequencer have ads?

Neither Thesys nor OCTACHRON MIDI Drum Sequencer shows ads.

### Which is updated more often, Thesys or OCTACHRON MIDI Drum Sequencer?

Thesys ships an update every 2 months, and OCTACHRON MIDI Drum Sequencer every 2 months. Most recently, Thesys was updated on October 29, 2026 and OCTACHRON MIDI Drum Sequencer on October 24, 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.*