# PolyrhythmLab — Polyrhythmic Groovebox & VJ

> Polyrhythmic Groovebox & VJ (iPhone/iPad app by Martin Adler.)

- Source: https://appshunter.io/ios/app/polyrhythmlab/id6806714489 (this page in markdown: same URL + `.md`)
- Developer: [Martin Adler](https://appshunter.io/developer/1896354791)
- Category: Music, Photo & Video
- Price: $4.99
- Age rating: 4+
- Requires: iOS 17.0 · 204 MB
- Languages: American English
- Released: 2026-09-02
- Data updated: 2026-09-10
- User reviews in markdown: https://appshunter.io/ios/app/polyrhythmlab/id6806714489/reviews.md

## What is PolyrhythmLab?

PolyrhythmLab is a groovebox built around true polyrhythms: every sound layer gets its own step count, pulse count, and rotation, so layers of different lengths interlock and drift in and out of phase instead of locking to one shared grid.

GROOVEBOX
• Euclidean-style rhythm engine — set steps, pulses, and rotation per layer
• Drums, glitch/textural one-shots, classic synth voices (piano, bell, pad, bass), and melodic synth patches
• Per-layer filter, reverb, delay, pitch, and LFOs on every parameter
• Randomize engine biased toward musical, playable combinations
• Chord modes, scales, and modal note selection for melodic layers

SONG MODE
Arrange your saved patterns into sections and chain them into a full song.

VJ MIX
A live visual performance surface: blend two audio-reactive visualizations, layer on real-time color and shader effects — RGB split, kaleidoscope, pixelate, glow, trail — and a 3D camera with zoom, pan, orbit, and tilt, each with its own LFO. Randomize the whole look by hand, or hand it to an autonomous "robot" that keeps remixing itself. Record the performance in real time via ReplayKit, or export a styled video clip.

CAST TO ANY SCREEN
Send the VJ Mix visuals to a TV or projector over AirPlay or a wired adapter, while your device keeps the full set of live controls.

PRESETS
Save and reload both groovebox patterns and VJ Mix setups — visual styles, effects, camera moves, and their LFOs — as named presets.

EXPORT
Render your patterns and songs to audio, or export them as MIDI.

No account, no ads, no analytics. Everything is stored locally on your device.


## Version history (last 1 release)

### 1.0 — 2026-09-02

No release notes.

## More apps by Martin Adler

- [Reharmonizator](https://appshunter.io/ios/app/reharmonizator/id6767040541)
- [Neo-Riemannian](https://appshunter.io/ios/app/neo-riemannian/id6777607274)
- [Negative Harmony](https://appshunter.io/ios/app/negative-harmony/id6781442884)
- [Choral Lab](https://appshunter.io/ios/app/choral-lab/id6782184585)
- [Particls](https://appshunter.io/ios/app/particls/id6783961985)
- [Padscape](https://appshunter.io/ios/app/padscape/id6785107448)

All apps by Martin Adler: https://appshunter.io/developer/1896354791

---

*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 2026-09-10.*