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Kopuz vs Bloomee: catalog facts
Kopuz	Bloomee
Free Free and open source under the EUPL-1.2, supported by sponsors.	Free Free and open source under GPL-2.0.
Windows, macOS, Linux, Android	Windows, macOS, Linux, Android, iOS, Web
Local files and many music services in one library Synced and word-timed lyrics display	Plays music from multiple sources Ad-free according to its project description
Apple Music playback only works on desktop Streaming sources need accounts with those services	Requires online music sources for streaming
Downloadable app	Downloadable app, Web application
Open source	Open source
License: EUPL-1.2	License: GPL-2.0
Not stated if an account is needed	Not stated if an account is needed
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.