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Harmony Music vs N-Zik: catalog facts
Harmony Music	N-Zik
Free Free to download and use.	Free Free and open source under the GPL-3.0 licence.
Windows, Linux, Android	Android
No login or Google account needed No ads while streaming	Lyrics that can be synced, edited and translated Offline caching and permanent downloads
Depends on YouTube Music, which can break unofficial clients Not available in the official Google Play store	Described by its developer as a side project Depends on YouTube Music, which can break unofficial clients
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-only
No account 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.