Music
StepPolyArp
StepPolyArp generates polyphonic MIDI patterns as an arpeggiator or step sequencer, standalone or within a compatible AUv3 host.
Create layered MIDI patterns and variations
Per-line timing and event controls support more elaborate sequences than a simple chord arpeggiator.
Keep in mind: The plug-in requires a host supporting AUv3 MIDI effects; audio-unit support alone does not establish that compatibility.
Inside the app
Official product images
What you can do
- Program a thirty-two-step event matrix
- Chain patterns and control per-event variation
- Route MIDI and synchronize with MIDI clock or Ableton Link
Good for
- Musicians building MIDI-driven arrangements with a tested host setup.
Consider alternatives for
- Users expecting every audio app to load a MIDI-effect plug-in.
Limitations & considerations
- Captured minimum: iOS 15.0.
- The plug-in requires a host supporting AUv3 MIDI effects; audio-unit support alone does not establish that compatibility.
Privacy & permissions
Preset synchronization and sharing use optional iCloud or external services; review what leaves the device.
Sources & review notes Updated Nov 11, 2026
Reviewed by iApp4Me Editorial Team. Recommendations use the linked documentation and attributed accounts; device observations are identified separately.
- US App Store developer description
Complete description, download price and compatibility metadata captured 2026-11-02.
No comments yet. Be the first to share your experience.