# OCTACHRON MIDI Drum Sequencer — MIDI CC AUv3

> Flexible iOS MIDI drum sequencer with 16 tracks and advanced modulation. (iPhone/iPad app by Markus Teufel.)

- Source: https://appshunter.io/ios/app/octachron-midi-drum-sequencer/id1453137215 (this page in markdown: same URL + `.md`)
- Developer: [Markus Teufel](https://appshunter.io/developer/1104803847)
- Category: Music
- Price: $9.99
- Rating: 4.50/5 from 104 App Store ratings · 104 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 12 MB
- Languages: American English
- Released: 2019-05-08
- Data updated: 2026-08-26
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/octachron-midi-drum-sequencer/id1453137215/reviews.md

## What is OCTACHRON MIDI Drum Sequencer?

OCTACHRON is a very flexible iOS MIDI Drum Sequencer with up to 16 tracks and rich modulation and sequencing capabilities. It is optimized for drums, but also a lot of fun for basic melody lines. It works standalone or as AUv3 MIDI plugin in your favorite iOS DAW or mixer. (E.g. AUM, Logic Pro, Cubasis, Beatmaker, ApeMatrix, Groove Rider, Nanostudio and more (not GarageBand))


PRESS REVIEWS 

- “OCTACHRON is almost perfect now”  (haQ attaQ)
- “Favorite MIDI Sequencer - User's Choice Award 2022” (iOS AUv3 Facebook Group)
- “An exciting MIDI sequencer with advanced features” (Synth Anatomy)
- “Particularly the probability parameters are a lot of fun” (Amazona)


!!! PLEASE NOTICE: OCTACHRON IS A MIDI SEQUENCER AND DOES NOT CREATE ANY SOUNDS OF ITS OWN !!!

We believe in specialization. This is why OCTACHRON is focused on in depth MIDI sequencing. Control your favorite iOS drums like Blip Box, Ruismaker or MV08, synths like Zeeon or Model D or any other hard- or software MIDI instrument with it.
iOS 12 or higher required. If used with a host software, this has to be compatible with the MIDI AudioUnit standard.


OVERVIEW

- Standalone or AUv3 AudioUnit
- 1-32 steps with flexible clock divider and custom time signatures
- Up to 16 mutable tracks with adjustable length
- Up to 8 chainable patterns (song mode)
- Swing with flexible swing grid
- Save, restore and export your pattern presets, MIDI files and MIDI mapping presets
- Parameter lock for velocity, ratcheting, offset, trigger probability, trigger condition, gate length and MIDI CC Modulation
- Scales generator
- MIDI control pattern selection, play and mute
- Customizable mapping and mapping presets
- Works iOS 12 upwards
- Optimized for iPad and iPhone
- Also compatible standalone with M Macs and Apple Vision Pro


LOTS OF MAPPING PRESETS FOR POPULAR DRUM APPS AND HARDWARE

- AR-909, Axxon 2 & Blip Box
- Dadamachines Automat, Digistix & DM1/DM2/Drumlab
- DrumComputer by Sugar Bytes
- EGDR 606, 808 & 909
- FAC Drumkit, Hammerhead
- Koala Sampler & Korg Gadgets
- MV08 & NS2 Slate
- Pure Acid Drums
- Ruismaker & Ruismaker FM
- SDS-X, Sitala & Splat-To-Clat
- VA Drum SM, VA Drum2 808 & 909
- Vatanator

- Korg Electribe EMX & ER-1
- Korg Volca Beats
- MFB 522
- Roland MC-101
- Roland TR-08
- Roland TR-707 & 727
- Roland TR-808
- Roland TR-909

Also save, load and share your own MIDI mappings ...


SMART RANDOMIZER 

- Smart pattern randomizer
- Randomizer configuration per track
- Trigger mutation per track
- Mutation of internal and CC modulation parameters


PARAMETER LOCK

- Velocity and MIDI CC modulation
- Multiple hits per step with ratcheting
- Offset
- Trigger probability
- Trigger condition
- Gate length
- MIDI CC on every step
- 8 CCs per Track
- Mutation of Internal and CC Modulation


TRACK SETTINGS

- Assign MIDI notes to each track or use mapping presets
- Individual track length to create polyrhythms


LIVE PERFORMANCE FEATURES 

- Instant pattern switch option
- Mute function per track to easily build up layers


CONNECTIVIY

- Sequence other standalone apps, AUv3 AudioUnits or external hardware via MIDI
- OCTACHRON derives its timing from the host application, its internal clock or via AbletonLink
- Trigger on different MIDI channels per track


NO TRACKING 

- OCTACHRON works offline
- No push notifications
- No ads or in-app purchases
- No tracking tools
- Active on social media and in the mobile music community
- Ongoing development and support and many new features on the list


FOR MELODIC INSTRUMENTS GENERATE VARIOUS SCALES IN ALL KEYS

OCTACHRON is optimized for drums. But it also supports standard melodic scales like major, minor and also more unusual ones like mixolydian, phrygian and more ...

## Key features

- 16 mutable tracks
- AUv3 MIDI plugin
- Standalone operation
- Parameter locking
- Smart randomizer
- Chainable patterns
- Custom time signatures

## What do users think of OCTACHRON MIDI Drum Sequencer?

Overall sentiment: positive

**Pros**

- 👍 Intuitive and easy to use
- 💡 Powerful and versatile sequencer
- 🚀 Produces results quickly
- 🌟 Great for drum patterns
- 🎛️ Excellent modulation options
- 🛠️ Swiss Army knife of drums
- 🔄 Constant updates and improvements
- 🎶 Great for generative textures
- 🎯 Go-to drum sequencer
- ✨ Brilliant and well-crafted app
- 💯 Highly recommended
- 🎵 Fun to use
- 🎨 Dynamic and clean interface
- 🧑‍💻 Responsive and engaged developers
- 💡 Inspires creativity
- 🧩 Brings everything together
- ⚡ Fast and efficient workflow
- 🎚️ Good for live sequencing
- 🎶 Musically useful results
- 🌟 Top-tier app
- 🚀 Great for beginners and pros
- 💯 Must-have for mobile music
- ✨ Incredible power
- 👍 Works well with other apps/hardware
- ✅ Plug and play
- 🚀 Fast and easy setup
- 🌟 One of a kind
- ✨ Great AUv3 sequencer
- 💡 Offers variation options
- 💯 Worth the price

**Cons**

- 🐛 Pattern change via MIDI difficult
- ❓ Clock div issues reported
- 💡 Missing touchable pads
- ❓ No sound output reported
- 🐛 Projects broken by update
- 💡 Limited number of patterns
- ❓ No MIDI recording option
- 🐛 Unwanted random notes
- 🐛 Skipping first note on pattern change
- 🐛 GUI glitchy/choppy
- ❓ No manual or tutorials
- 💡 No iPhone version
- ❓ GarageBand AUv3 compatibility questioned
- 💡 Only 8 patterns maximum
- 🐛 Crashing when loading custom mapping
- ❓ No note length option
- ❓ Only 1 octave range
- 🐛 Repeating notes unexpectedly
- 🐛 Kick muting in song mode
- 🐛 Controller faders not working perfectly
- 💡 No MIDI channel per track
- 💡 No pattern resync for DAW sync
- 💡 No way to preview sounds
- 💡 No way to import sound directly
- 💡 No follow mode in song mode
- 💡 Enhanced mod edit mode needed
- 💡 Ability to drag/select patterns in song mode
- 💡 MIDI learn button for tracks
- 💡 Option to record drums live
- 💡 MidiStep record feature requested
- 💡 Add more patterns
- 💡 Add triplets
- 💡 Midi file export/import
- 💡 System-wide preset save/load
- 💡 Randomization for different genres
- 💡 16 channels needed
- 💡 More options for MIDI input
- 💡 Midi channel per drum sound
- 💡 Number indicating parameter value
- 💡 Ability to tie patterns

**Commonly reported bugs**

- Clock div issues reported
- No sound output reported
- Projects broken by update
- Skipping first note on pattern change
- GUI glitchy/choppy
- Crashing when loading custom mapping
- Repeating notes unexpectedly
- Kick muting in song mode
- Controller faders not working perfectly
- Unwanted random notes
- MIDI recording not an option
- Pattern change via MIDI difficult
- GarageBand AUv3 compatibility issues
- No sound output
- Projects corrupted after update
- Clock division not working
- Difficulty changing patterns
- MIDI note sequences cannot be recorded
- Choppy visual experience
- Random notes played with ThumbJam
- Crash when loading saved custom mapping
- Skipping first note when switching patterns
- Repeating notes without repeat enabled
- Kick drum mutes in song mode

**Most 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
- Add randomization for different genres
- Increase channel count to 16
- Add more options for MIDI input for real-time control
- Add MIDI learn button for each track
- Add option to record drums live into the sequencer
- Add more patterns
- Follow mode for song mode GUI
- Enhanced mod edit mode with inline editing
- Ability to drag/select patterns in song mode to auto loop
- App preset for Arturia iSpark
- MIDI channel per drum sound
- Number indicating parameter value while changing
- Ability to tie patterns
- Note length option
- 16 channel support
- MIDI channel per track
- Pattern resync for DAW synchronization
- Expandable number of patterns and rows
- Preview sounds
- Import sound directly into slots
- Triplets division

## Recent user reviews (10 of 104)

All indexed reviews: https://appshunter.io/ios/app/octachron-midi-drum-sequencer/id1453137215/reviews.md

### 5/5 — OCTACHRON

*2026-07-15*

Brilliant app. It’s deceptive. At first it seems really simple. Until you realise how much control you have and what you can do with it.

### 3/5 — Jetzt noch eine einfache Velocity Einstellung,

*2026-06-17*

bei der man mit dem Finger den farblichen Balken je Stepp min&maximieren könnte und man einzelne Stepps auch 
stumm schalten könnte.
Hoffentlich gibt es noch ein Update dahingehend.

### 5/5 — The best sequencing app for drum patterns

*2026-03-13*

I just love this app ! The ability to change each tracks length is absolutely superb !

**Developer response:** Thank you very much! Really glad you like our little Drum Sequencer. Keep enjoying! Any features you wish for in future releases? 😊

### 5/5 — Very Powerful Sequencer

*2026-02-07*

Easy to use and produces results quickly. I love the built in midi maps for many apps. (After further exploration, the modulation options here make this a true powerhouse: awesome!)

**Developer response:** Thank you very much! Really glad you like our little Drum Sequencer. Keep enjoying! Any features you wish for in future releases? 😊

### 5/5 — Swiss Army knife of iPad drums.

*2026-01-27*

So useful, so good, great developers, just get it, you won’t regret it. 6 Stars

**Developer response:** Thank you very much for your nice words! Really glad you like our little Drum Sequencer. Keep enjoying! Any features you wish for in future releases? 😊

### 5/5 — Very good - Little bug ?

*2025-12-28, version 2.2.1*

Hi, I like it very much. Is it possible though that there might be a bug causing the custom mapping not to save each track's custom MIDI channel (other than the default 01)?

### 4/5 — Been wanting this one.

*2025-11-27*

I am stoked about this app. I love the various layout that are pre mapped. My only seemingly simple l suggestion would be maybe add a set of touchable pads. If it’s not too much to implement. I would love to be able to play all of my drum apps within this app and not have to pre-map all my midi drum apps. Save me so Michael Eldridge time. Thanks and great job

**Developer response:** Thank you very much! Really glad you like our little Drum Sequencer. Keep enjoying! And yes, we plan to integrate a live recording function via pads in a future release. Hope we get 5 stars from you then 🙂 This is what you mean, no? 😊

### 5/5 — Go To Drum Sequencer

*2025-11-14*

Ive been using this amazing sequence for a long time, its had several amazing updates to enhance the abilities of this  great application. Its simple and easy to use but with complex features for all your sequencing needs. It has offset, probability, repeat, velocity, mutate, random generator, presets for so many drum apps and hardware, and much more. Can play notes or send CC data as well. A brilliant, well crafted app, that i would highly recommend to anyone looking for a great AUv3 sequencer!

**Developer response:** Thank you very much for your nice feedback! Glad you like our MIDI Drum Sequencer. Keep having fun with it and stay tuned for updates!

### 4/5 — Eigentlich der beste…

*2025-07-25*

aber wo zum Teufel ;) kann man denn den Pattern-Wechsel per Midi steuern. Das macht doch sonst jeder Drumsequenzer über die Midispur. In Drambo habe ich das über die Automation hinbekommen. Song Modus ist keine Option für mich.

**Developer response:** Hey Boothoven, vielen Dank und jetzt geht es! Siehe auch unser Kapitel „EXTERNAL CONTROL VIA MIDI NOTES STANDALONE AND AS AUV3“ ganz unten in unserem Manual:  https://octachron.de/manual.html . Bekommen wir jetzt auch 5 Sterne von dir? 😊

### 5/5 — The best

*2025-07-13*

Ce séquenceur dédié aux drums est très abouti, simple d’emploi mais très efficace. Les développeurs sont de plus à l’écoute et les fréquentes mises à jour apportent de pertinentes améliorations souvent accompagnées de nouvelles fonctions. Un must 👍🏻

**Developer response:** Thank you so much! 😊  Really glad you like it!

## Frequently asked questions about OCTACHRON MIDI Drum Sequencer

### What does OCTACHRON do?

OCTACHRON is a versatile iOS MIDI drum sequencer designed for creating complex rhythmic patterns and melodies. It offers up to 16 tracks with extensive modulation and sequencing capabilities, allowing users to control external MIDI instruments.

### What are the key features of OCTACHRON?

Key features include up to 16 mutable tracks, standalone operation or AUv3 plugin compatibility with iOS DAWs, parameter locking for velocity, ratcheting, and MIDI CC modulation, a smart randomizer, chainable patterns for song mode, and flexible clock dividers with custom time signatures.

### How much does OCTACHRON cost?

The application is a paid app, meaning there is an upfront cost to purchase and download it from the App Store. There are no in-app purchases or subscription fees mentioned.

### What are the compatibility requirements for OCTACHRON?

OCTACHRON requires iOS 12 or higher and is optimized for both iPad and iPhone. If used as an AUv3 plugin, the host DAW or mixer software must be compatible with the MIDI AudioUnit standard. It also works standalone with Macs and Apple Vision Pro.

### Can OCTACHRON create its own sounds?

No, OCTACHRON is strictly a MIDI sequencer and does not produce any sound on its own. Its purpose is to send MIDI data to control other sound-generating instruments, whether they are software synths, drum machines, or hardware MIDI devices.

## Version history (last 5 releases)

### 2.2.2 — 2026-03-05

This update introduces new mapping support and stability improvements.

New
• Added mapping preset for Baby Audio TEKNO

Fixes
• Resolved an issue where trigger conditions could send inconsistent MIDI signals
• Fixed visual glitches

### 2.2.1 — 2025-12-20

Fixes issue where AUv3 parameters were not updated properly

### 2.2.0 — 2025-12-14

- MIDI control is supported in AUv3
- MIDI mappings open with the project and activate automatically
- Export presets and
- Export MIDI files for use across devices
- Presets are shared between standalone and AUv3
- BUGFIXES

### 2.1.2 — 2025-07-08

This release is addressing following bugs
- fixes broken midi/parameter control
- fixes wrong midi channels when generating scales
- fixes unreadable labels in modulation selection dialog
- reduces usage of DSP ressources

### 2.1.1 — 2025-06-07

Bugfix related to issues with pre roll, Groove Rider 2, Logic

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## More apps by Markus Teufel

- [Dadachron](https://appshunter.io/ios/app/dadachron/id1489055566)

All apps by Markus Teufel: https://appshunter.io/developer/1104803847

## Related topics

[octachron midi drum sequencer](https://appshunter.io/ios/topics/octachron-midi-drum-sequencer) · [drum sequencer](https://appshunter.io/ios/topics/drum-sequencer) · [auv3 drum](https://appshunter.io/ios/topics/auv3-drum)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*