Compare software

4K YouTube to MP3 vs Azul Box: catalog facts
4K YouTube to MP3	Azul Box
Freemium Free to download and use, with paid Lite and Personal plans for extra features.	Free Free and open source under the GPL-3.0.
Windows, macOS, Linux	Linux
Downloads whole playlists and channels as audio Supports many sites beyond YouTube	Graphical front end for yt-dlp and ffmpeg MusicBrainz metadata for downloaded music
Some features require a paid plan Higher-quality YouTube audio requires a YouTube Premium membership	Linux only Small single-developer project
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	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.