An open-source music sequencer software
for desktop and mobile platforms

Helio is an attempt to rethink a music sequencer: prefer minimalistic, distraction-free UI, aim for clear over clever, and encourage experimentation in underexplored areas in music, like exotic scales and microtonal temperaments.

Screenshot

Follow the documentation to get started;
learn about hotkeys, refactoring options, arpeggiators, and more.