The first two features on the "Major Features" list are paywalled, and this is mentioned only on the bottom of the description.

Great tool. Does exactly what it says.

Genious and very practical

Una maravilla, tan rápido y eficiente como ningún otro. Baja videos de casi todas partes. Después de mucho probar estoy convencido de que es el mejor de todos.

Top downloader. When Youtube break something the developer is working on a fix straight away.

Hi. This is a really handsome addon. Easy to use and good results. In case of troubles the support is fast and mostly effective. Although, support may take some time, depending on the problem. One should consider giving it a try and changing to the PRO version if 1080p downloads are required.

Love this add-on and have been using it successfully for years. Kudos to the dev for always keeping it updated and informing users when youtube frequently changes the code. I've donated because it's just SO useful!

Clickbait for Premium purchases

the best downloader I have ever used

Requires payment

Maybe it used to be good, but it now requires payment to download as mp3 (and some video type(s))