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Zrythm vs Helio: catalog facts
Zrythm	Helio
Free Open-source software; see the download page for current installer options.	Free Free and open source under the GPL-3.0.
Windows, macOS, Linux	Windows, Linux, Android, iOS
Automation with curves, LFOs and envelopes Chord pad and chord track for writing harmony	Support for exotic scales and microtonal temperaments Minimal, distraction-free interface
Version 2 is still in alpha Smaller user base than established DAWs	Less conventional workflow than mainstream DAWs Focused on sequencing rather than audio recording
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
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 September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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