Appears to be a good add-in per the comments, but it will not download at all and just sits there spinning but never downloading and installing itself. So if one can't even download it, then it's not worth wasting time any longer and I give up trying.

All volume booster extensions suddenly seem to stop videos from streaming if you change the volume, requiring the page to be reloaded, but if you reload the page, the volume booster resets to 100%.

Controls are Terrible.

Click Bait.

Must click on Extensions to open App &
set Volume
each time.

PITA - otherwise it does boost volume