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OpenTune vs N-Zik: catalog facts
OpenTune	N-Zik
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Ad-free and background playback Offline downloads and synchronized lyrics	Lyrics that can be synced, edited and translated Offline caching and permanent downloads
Unofficial client that depends on YouTube Music and can break when it changes Android only	Described by its developer as a side project Depends on YouTube Music, which can break unofficial clients
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-only
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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