Trigger and transpose your patterns. Live.

Matrix Polynator is a polyphonic step sequencer VST3/AU plugin for Mac and Windows, built in C++ for tight, low-latency performance. Inspired by the legendary Matrix Pattern Sequencer from Reason Studios, Matrix Polynator turns your MIDI keyboard into a powerful pattern performance tool — draw your pattern once, then play it in any key, any time.

Record melodies and chords, one step at the time.

Every step can hold a full chord. Draw notes with your mouse or record from your MIDI keyboard one step at a time — no BPM stress. Press STEP IN and Matrix Polynator waits silently for your next input. Play a note or chord and it locks in as a step, then waits again for the next one. Each note becomes a step, at your own pace. Simple as that.

Few controls. Endless results.

8 patterns across 4 banks (32 in total). Switch mid-performance — your pattern waits for the next step, beat, or bar before switching. Copy it to a new slot, hit Random for subtle variations, combine with live transposition and every pattern becomes something new every time.

Automate Gate, Rate and Shuffle

Every parameter you need, automatable from your DAW. Shape your pattern over time — tighten the gate, shift the groove, push the shuffle. Set it and let it evolve.

Free download. No registration required.

Matrix Polynator is free — download it, use it, enjoy it. If you’d like to support future development, you can pick a tier below or buy me a coffee directly.
Buy me a coffee

Universal Binary (Intel & Apple Silicon) · VST3 & AU
macOS 11 Big Sur or later
Latest built : V1.1.0 (June 5, 2026)

VST3 only
Windows 10 (64-bit) or later
Latest built : V1.1.0 (June 5, 2026)