This is not a free add-on... Nothing wrong with paid things but dont waste our time marking it as free until we try to use it

Just wanted to be able to download mp3s, not HQ videos or anything, but the mp3 feature is only available if you pay

Avoid. Complete garage. Can't do hardly anything without purchasing the "PRO" version.

makes you buy pro version to download in anything higher then 720p

Another paywall trap extension. Do not waste your time. You need to pay to use it.
Such false-advertising extensions should be banned.

The extension is just an ad. Non-functional if you don't buy the "Pro" version. Claims vids need conversion, I have other dl utilities that say otherwise. SPAM!

SPAM!! IT DOES NOT WORK, instead asks you to but PRO version.

Youtube switched to separate audio/video streaming technology for higher quality formats and no longer provides direct 720p (Since 24 September 2018)/1080p/mp3 streams. Converting these streams to downloadable formats for you needs powerful server infrastructure, therefore 1080p/mp3 downloading has been limited to PRO users. Read more at - https://videodroid.org/pro_upgrade.html. FREE users can download all formats in CACHE where some PRO users fetched the video/audio in past 24 hours, to test the feature you can try downloading popular videos.

wasting my time.

Unfortunatly, there is no working.

Requires payment for mp3 download

Add-on requires a pay "pro" version to properly work. No trial version to even tell if it works. A "donation" is expected. Unable to verify quality.

Did not support any MP3 formats. Useless.

A marché la première fois, puis j'ai le message : "Youtube switched to separate audio/video streaming technology for higher quality formats and no longer provides direct 720p (Since 24 September 2018)/1080p/mp3 streams. Converting these streams to downloadable formats for you needs powerful server infrastructure, therefore 1080p/mp3 downloading has been limited to PRO users. Read more at - https://videodroid.org/pro_upgrade.html. FREE users can download all formats in CACHE where some PRO users fetched the video/audio in past 24 hours, to test the feature you can try downloading popular videos."
Donc impossible de télécharger une vidéo en MP3.
Semblerait il qu'il n'y ai pas de maj depuis 2018 donc ...

it doesnt work, uninstalling :(