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Helio vs Pagan: catalog facts
Helio	Pagan
Free Free and open source under the GPL-3.0.	Free Free and open source under GPL-3.0-only.
Windows, Linux, Android, iOS	Android
Support for exotic scales and microtonal temperaments Minimal, distraction-free interface	Compact notation designed for mobile screens Imports and exports MIDI files
Less conventional workflow than mainstream DAWs Focused on sequencing rather than audio recording	Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-only
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.