Works perfectly for me. I don't know what the bad reviews are for. I liked it enough to upgrade to the Pro version. If you use it a lot to study tutorials, etc. it is worth it, whether you use the free or Pro version. (Other extentions I've tried were much slower and buggy and often fail altogether.)

It has been a great tool for years and kept up with the changes. It is more than worth supporting, I should have done that earlier. My bad.

upgraded to pro version but cant seem to download the pro version

overall, I'm glad I can download HQ MP3 after donating

the "donate" spiel is basically a paywall for videos higher than 720p
usual freemium

says you need to upgrade for 1080p and mp3 downloading, understandable given the circumstances. But the same goes for mp4 downloading as well in 720p. Waste of time this add-on

no download. Why?

It doesn't work on region blocked videos. And since I had installed this extension solely for this purpose...

Great app! Works every time! Few days of delay after Youtube/Firefix updates

Great add-on. For those who removed it or rated it very low: it rarely happens that the add-on may not work for a couple of days, but the occasional problems were always solved. I am very satisfied and will continue supporting it.

Excellent. Excellent add-on for regular youtube users. The fee for downloading high-res videos is nominal and the service is super! Thanks guys! you are doing a great job.