This program was designed for Mac users who wish to extract tracks from their favorite YouTube clips, whether they're music videos, software tutorials, etc. 4k YouTube to MP3 has an intuitive interface, provides you with high-quality output, and supports batch processing.
The utility supports MP3 as an output format and also enables you to save the soundtracks as M4A or OGG files. You can also choose the preferred quality (320, 256 or 128 KBPS), enable an option to automatically add converted tracks to iTunes library, and much more.
On the homepage of the developer it says this application is free of charge. However, you need to pay a certain amount of money in order to get rid of ads and unlock all features (download YouTube playlists, YouTube VEVO download, and SoundCloud music download).
You can choose not to make the purchase and just download individual YouTube clips to your Mac. The output quality is excellent and the results are offered within moments.
With that being said, I think it's worth installing this app on your Mac if you need to extract soundtracks from your favorite YouTube clips. Plus, the price you need to pay to unlock all features is rather affordable.