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Kopuz vs Harmonoid: catalog facts
Kopuz	Harmonoid
Free Free and open source under the EUPL-1.2, supported by sponsors.	Free Downloads are offered from the website and GitHub releases with no price listed.
Windows, macOS, Linux, Android	Windows, macOS, Linux, Android, iOS
Local files and many music services in one library Synced and word-timed lyrics display	Runs on desktop and mobile platforms Broad format support through mpv and FFmpeg
Apple Music playback only works on desktop Streaming sources need accounts with those services	Focused on music, not video License terms are not stated on the homepage
Downloadable app	Downloadable app
Open source	Closed source
License: EUPL-1.2	License not stated
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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