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Octachron

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What Octachron is

OCTACHRON is a MIDI drum sequencer for iOS and macOS that sends MIDI rather than creating sound itself. It can run standalone or as an AUv3 MIDI plugin in compatible hosts including AUM, Cubasis, Logic Pro, Beatmaker, ApeMatrix, and Nanostudio; the maker says it does not work with GarageBand. Patterns support 1–32 steps and up to 16 mutable tracks with flexible lengths, while song mode can chain up to eight patterns. Sequencing options include swing, parameter locks, trigger probability and conditions, ratcheting, gate length, and MIDI CC modulation. A per-track smart randomizer can change triggers and internal or CC modulation parameters. Users can save and restore presets and export MIDI files, pattern presets, and MIDI mapping presets. It syncs through its host, an internal clock, or Ableton Link. OCTACHRON costs $9.99 once. The maker says it works offline without ads, in-app purchases, push notifications, or tracking tools, and is optimized for iPad and iPhone; it is also compatible standalone with M Macs and Apple Vision Pro.

Who it suits

OCTACHRON suits musicians who want to sequence drums for standalone apps, AUv3 instruments, or external MIDI hardware. The maker also says it can be used for basic melody lines.

What it does well

  • Up to 16 mutable tracks and eight chainable patterns
  • Includes trigger probability, conditions, and ratcheting
  • Exports MIDI files and mapping presets
  • Works offline without ads or tracking tools

What to know first

  • Does not create sounds itself
  • Does not work with GarageBand
  • No free trial or free plan
  • Available on iOS and macOS platforms

Plans

PlanBilled and limitsPrice
OCTACHRONiOS 12 upwards · standalone or AUv3 MIDI plugin$9.99, paid once

As octachron.de lists them, read 9 Oct 2026. The maker's own page has the final word.

Verdict

OCTACHRON offers detailed MIDI sequencing and pattern tools, but requires another sound source. Check host compatibility if you plan to use it as an AUv3 plugin; GarageBand is not supported.

Facts from Octachron's own pages

Compatibility
The maker says it works on iOS 12 and later, is optimized for iPad and iPhone, and is also compatible standalone with M Macs and Apple Vision Pro. · octachron.de, 9 Oct 2026
Connections
It can sequence standalone apps, AUv3 AudioUnits, and external hardware via MIDI, and can sync via its host, internal clock, or Ableton Link. · octachron.de, 9 Oct 2026
Developer and location
The site identifies Markus Teufel and lists a Munich, Germany address in its imprint. · octachron.de, 9 Oct 2026
Headquarters
Munich, Germany · octachron.de, 28 Sept 2026
Integrations
It works as a standalone app or AUv3 MIDI plugin in compatible hosts including AUM, Cubasis, Logic Pro, Beatmaker, ApeMatrix, and Nanostudio; the site says it does not work with GarageBand. · octachron.de, 9 Oct 2026
Intended users
The maker says OCTACHRON is optimized for drums and can also be used for basic melody lines. · octachron.de, 9 Oct 2026
MIDI export
Users can save and restore presets and export pattern presets, MIDI files, and MIDI mapping presets. · octachron.de, 9 Oct 2026
MIDI mappings
It includes mapping presets for popular drum apps and hardware, and users can save, load, and share their own MIDI mappings. · octachron.de, 9 Oct 2026
Patterns
It supports up to eight chainable patterns in song mode. · octachron.de, 9 Oct 2026
Privacy
The maker says the app works offline and has no ads, in-app purchases, push notifications, or tracking tools. · octachron.de, 9 Oct 2026
Product
OCTACHRON is a MIDI drum sequencer and does not create sounds of its own. · octachron.de, 9 Oct 2026
Randomizer
Its smart randomizer supports per-track configuration and trigger mutation, including mutation of internal and CC modulation parameters. · octachron.de, 9 Oct 2026
Sequencing tools
Features include swing, parameter locks, trigger probability and conditions, ratcheting, gate length, and MIDI CC modulation. · octachron.de, 9 Oct 2026
Support
The maker says development and support are ongoing and recommends contacting them by tagging them in a social post or using the OCTACHRON thread in the Loopy Pro Forum. · octachron.de, 9 Oct 2026
Tracks and steps
It supports 1–32 steps and up to 16 mutable tracks with flexible length. · octachron.de, 9 Oct 2026

Where Octachron stands on Freedom251

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