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RiPlay vs Kopuz: catalog facts
RiPlay	Kopuz
Free Free and open source under GPL-3.0.	Free Free and open source under the EUPL-1.2, supported by sponsors.
Android	Windows, macOS, Linux, Android
Plays both online and offline music Extensive customization options	Local files and many music services in one library Synced and word-timed lyrics display
Desktop builds are less documented than the Android app The large number of options can be a lot to take in	Apple Music playback only works on desktop Streaming sources need accounts with those services
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: EUPL-1.2
Not stated if an account is needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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