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Harmonoid vs Cog: catalog facts
Harmonoid	Cog
Free Downloads are offered from the website and GitHub releases with no price listed.	Free Free and open source, supported by donations.
Windows, macOS, Linux, Android, iOS	macOS
Runs on desktop and mobile platforms Broad format support through mpv and FFmpeg	Gapless playback and embedded CUE sheet support Plays a very broad range of formats, plus livestreams and HLS
Focused on music, not video License terms are not stated on the homepage	macOS only; the Windows and Linux version is still early Requires macOS 12 or later
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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