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SimpMusic vs N-Zik: catalog facts
SimpMusic	N-Zik
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Ad-free background playback of YouTube Music Browse charts, podcasts and moods and genres	Lyrics that can be synced, edited and translated Offline caching and permanent downloads
Unofficial client that depends on YouTube Music data May break when YouTube changes its service	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-only	License: GPL-3.0-only
Not stated if an account is needed	No account needed
Not stated if it 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.