Apps Like StepPolyArp for iPhone and iPad
Generate melodic patterns from MIDI input
Create and save unlimited presets with 16 patterns each. Adjust polyphonic and polyrhythmic sequences. Sync presets to iCloud. Use as a standalone or AUv3 MIDI effect. Generate melodic patterns from played notes or chords.
StepPolyArp screenshots
Ranked alternatives
Showing 541–560 of 1,000 ranked alternatives.


sir Sampleton
Paul Slocum
Record sounds, play back with piano keys
Record sounds via microphone and play them on dual piano keyboards with a rhythm machine. Create complex musical arrangements using voice, instrument, and environmental samples. Export and share audio files. Supports Audiobus and MIDI connectivity.



Helium AUv3 MIDI Sequencer
Limelight Software
Sequence tracks and manage clips
Plugin for AUM. Supports 16 tracks with unlimited length and 16 output ports. Import and manage clips via Media Bay. Drag and drop clips to build songs. Direct output to multiple channels.


microTERA
Harry Gohs
Dynamic spectra creation with unique sounds.
The app uses waveshaping synthesis to create unique sounds by altering spectra with sound amplitude. It offers a randomizer for generating new sound patches and includes multiple oscillators, envelopes, and effects.



KeyStage Lite
Ali Gokturk
Control instruments with MIDI controllers
Allows users to control multiple hardware and software instruments via MIDI controllers. Organize projects into sections for different song parts. Adjust instrument sounds and parameters within sections.



OODA — Portable MIDI Sequencer
Ryan Robinson
Sequence steps with conditional wormholes
Create and edit sequences with step-based patterns. Connect steps using conditional wormholes for structured or random variation. Adjust melodies in real time without affecting the groove. Sync with external devices for live performance.





SWAM Trumpet
Audio Modeling Srl
Play with MIDI devices
Play virtual with MIDI controllers or keyboards. Adjust articulation, dynamics, and breath effects. Use Room Simulator "Ambiente" for spatial audio. Load and save presets. Export audio in multiple formats.


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Apps are ranked by functional similarity, category fit, rating confidence, and popularity.