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spotDL vs 4K YouTube to MP3: catalog facts
spotDL	4K YouTube to MP3
Free Free and open source.	Freemium Free to download and use, with paid Lite and Personal plans for extra features.
Windows, macOS, Linux, Command line	Windows, macOS, Linux
Adds album art and metadata to downloaded files Handles whole playlists and albums	Downloads whole playlists and channels as audio Supports many sites beyond YouTube
Audio comes from YouTube matches, which can sometimes be wrong Command line only	Some features require a paid plan Higher-quality YouTube audio requires a YouTube Premium membership
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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