Euclidean AUv3 Sequencer 4+

Automatic PolyRhythm Generator

Designed for iPad

    • 4.9 • 26 Ratings
    • $12.99



Euclidean Sequencer is an alternative incarnation of the classic step sequencer that has become very popular in the modular realm. It is based on Euclidean rhythms developed by computer scientist Godfried Toussaint in 2004. Euclidean rhythms have their roots in Greek mathematician Euclid’s algorithm, which involves using the greatest common divisor of two numbers to place hits in a sequence as evenly as possible across a set timing divisions.

In practice this is actually simpler than you might think, and Euclidean Sequencer is a great way to auto generate complex musical sequences with no prior knowledge of how it actually works.

Euclidean Sequencer is an AUv3 plugin that can be loaded inside any popular host application that has flexible MIDI routing.

You can define up to 4 Euclidean rhythm parts, each part is referred to as a band. The bands are labelled A-D and colour coded RED, ORANGE, GREEN and CYAN. Together these 4 bands create a pattern, and you can create up to 16 seperate patterns per song patch.

Since each band can specify its own note sequence and output MIDI channel, you can create some quite sophisticated rythms patterns, driving 4 seperate instruments at once. Even better you can seamlessly switch patterns to create even longer evolving sequences. Patterns follow a specified key, scale, or defined chord.

You can even use MIDI input to automatically make note sequences conform to the currently playing chords.

Please note: This is an AUv3 plugin instended to be used inside your favourite host DAW such as AUM, Cubasis, Loopy Pro etc. It will work with any app that has flexible MIDI routing.


4 Band Sequencer
16 Patterns per patch.
Up to 64 events per band.
Seamless pattern transitions.
Output Port and Channel control.
Per Band and Global speeds.
Randomize function with varying complexity.
Supports note Probability.
Reverse and PingPong modes.
MIDI Chord recognition.
Latch mode.
4 Band Velocity Mixer
Controller support.
Gate Mode.
AUv3 Compatible.

What’s New

Version 1.09

v1.09 B90
Fixed an issue with chord detection which was occasionally crashing the app.
Improved the speed of chord detection algorithm.

Ratings and Reviews

4.9 out of 5
26 Ratings

26 Ratings

Aesop ,

Need to control both events and steps

Wonderful app, and I was very pleased when the dev said they would look at exposing *both* the events and steps to midi control. (I’m still not sure why these weren’t the first two things to become mappable.) as it is it’s great, but by not allowing control of both main parameters it kind of has one arm tied behind its back, so to speak.

Oceans in space ,

Seems perfect with room for more controls

For what it is, it’s worked well and sounded in the grid but able to sound far out in a way… I have never tried 4 different synths at once though. I also hope some more midi madness type effecting is welcome, hails!

Porchglider ,

Too easy to mess up patterns !! Randomize button should reveal settings

Too easy to mess up patterns !! Randomize button should reveal settings not randomize everything your working on.

Clearly some real musicians need to help the creators of this with some workflow ideas

Fix the randomize button to ONLY pull up the settings… otherwise the default randomize breaks all your hard work

Developer Response ,

There is a multi-level undo which you can use to step back through previous randomizations. You get to choose which elements to randomize, its not re-creating the whole band/bands if the options are setup correctly.

App Privacy

The developer,, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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