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OCTACHRON MIDI Drum Sequencer

OCTACHRON MIDI Drum Sequencer

MIDI CC AUv3

98 ratings
104 reviews
#131 in paid Music
🎵 Music
$9.99

Details

  • Released
  • Updated
  • May 8, 2019
  • March 5, 2026

Features

Developer

Markus Teufel
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OCTACHRON MIDI Drum Sequencer screenshot #1 for iPhone
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OCTACHRON MIDI Drum Sequencer screenshot #7 for iPhone
OCTACHRON MIDI Drum Sequencer screenshot #8 for iPhone
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About

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.

✓16 mutable tracks
✓AUv3 MIDI plugin
✓Standalone operation
✓Parameter locking
✓Smart randomizer
✓Chainable patterns
✓Custom time signatures
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What users say

Summarized from real user reviews of OCTACHRON MIDI Drum Sequencer. Based on 98 reviews and a 4.5/5 average, it highlights the 30 positives and 40 negatives reviewers mention most about this Music app.

Positive things

  • 👍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

Negative things

  • 🐛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
See all reviews

What's New in OCTACHRON MIDI Drum Sequencer

2.2.2

March 5, 2026

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

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Charts

Top Paid

📊 131

Music

The app has maintained its position at 131 recently.

Last updated on July 23, 2026.

User reviews

Most RecentHighest RatedLowest Rated

OCTACHRON

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.
uhuklluhukll

Jetzt noch eine einfache Velocity Einstellung,

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.
FlívaFlíva

The best sequencing app for drum patterns

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

Very Powerful Sequencer

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!)
TovokasTovokas

Swiss Army knife of iPad drums.

So useful, so good, great developers, just get it, you won’t regret it. 6 Stars
ChungusJonesChungusJones
See 99 more reviews

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User experience

🐞

Reported Bugs

24 issues

Clock div issues reported

Bug

No sound output reported

Bug

Projects broken by update

Bug

Skipping first note on pattern change

Bug

GUI glitchy/choppy

Bug

Crashing when loading custom mapping

Bug

Repeating notes unexpectedly

Bug

Kick muting in song mode

Bug

Controller faders not working perfectly

Bug

Unwanted random notes

Bug

MIDI recording not an option

Bug

Pattern change via MIDI difficult

Bug

GarageBand AUv3 compatibility issues

Bug

No sound output

Bug

Projects corrupted after update

Bug

Clock division not working

Bug

Difficulty changing patterns

Bug

MIDI note sequences cannot be recorded

Bug

Choppy visual experience

Bug

Random notes played with ThumbJam

Bug

Crash when loading saved custom mapping

Bug

Skipping first note when switching patterns

Bug

Repeating notes without repeat enabled

Bug

Kick drum mutes in song mode

Bug
✨

Requested Features

26 requests

Add touchable pads

Feature

Add MIDI Step record feature

Feature

Add triplets

Feature

Add MIDI file export and import

Feature

Add system-wide preset save and load

Feature

Add randomization for different genres

Feature

Increase channel count to 16

Feature

Add more options for MIDI input for real-time control

Feature

Add MIDI learn button for each track

Feature

Add option to record drums live into the sequencer

Feature

Add more patterns

Feature

Follow mode for song mode GUI

Feature

Enhanced mod edit mode with inline editing

Feature

Ability to drag/select patterns in song mode to auto loop

Feature

App preset for Arturia iSpark

Feature

MIDI channel per drum sound

Feature

Number indicating parameter value while changing

Feature

Ability to tie patterns

Feature

Note length option

Feature

16 channel support

Feature

MIDI channel per track

Feature

Pattern resync for DAW synchronization

Feature

Expandable number of patterns and rows

Feature

Preview sounds

Feature

Import sound directly into slots

Feature

Triplets division

Feature

FAQ

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.