---
title: "StepPolyArp — App Overview"
url: https://marlvel.ai/intel-report/music/steppolyarp
category: Music
developer: Laurent Colson
platforms: ios
rating: 4.8 (47 ratings)
pricing: paid
report_level: overview
generated: 2026-04-24
last_verified: "2026-04-24T11:01:18.229Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** StepPolyArp provides a highly versatile, professional-grade MIDI sequencing environment that bridges the gap between hardware controllers and software-based production.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Music |
| Rating | 4.8 ★ (47) |
| Pricing | paid |
| Platforms | iOS |
| Latest Version (iOS) | 5.2 |
| Developer | Laurent Colson |

<!-- SECTION: Summary -->
## What is StepPolyArp?

StepPolyArp is a polyphonic and polyrhythmic MIDI step arpeggiator and sequencer designed for both standalone use and as an AUv3 MIDI effect plug-in. It enables users to generate complex melodic patterns through a 32-step event matrix and 11 polyphonic lines, offering robust integration with external MIDI hardware and software hosts.

<!-- SECTION: Key Features -->
## Key Features

- **Dual-Mode Engine**: Functions as both a real-time step arpeggiator for melodic patterns and a standalone step sequencer.
- **Advanced Sequencing Matrix**: Features a 32-step event matrix with 11 polyphonic/polyrhythmic lines and 5 customizable polyrhythmic step controllers.
- **Flexible MIDI Connectivity**: Supports full internal and external MIDI I/O, MIDI clock synchronization, and Ableton Link integration.
- **AUv3 Plug-in Support**: Operates as an AUv3 MIDI effect plug-in, allowing for multiple instances within compatible host applications.

<!-- SECTION: Target Audience -->
## Who is it for?

Music producers and performers seeking advanced, customizable MIDI sequencing and arpeggiation tools for their mobile production workflow.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/steppolyarp/id1361313588?uo=4)
- [Full Intelligence Report](https://marlvel.ai/intel-report/music/steppolyarp)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/music/steppolyarp).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*