I'll give it a 5 because the issues only started today. YouTube seems to have changed something, so now the extension no longer works. Agreeing with the last guy that reviewed that the extension should be updated.
Edit: The issue has been fixed.

I've loved it so far, but it seems youtube is now autoplaying in playlists anyways. Need to update it. And yes, I've tried restarting computer. Don't know why youtube has a problem with an autoplay stopper.

Out of all of the popular addons for youtube "improvements" or "enhancements" - none of them ACTUALLY prevented youtube from loading the next video in a playlist - despite the option being in the settings. THIS ADDON ACTUALLY WORKED. Somehow only 1000 users at the time of this review, but hopefully I encourage others with it. Thank you to the dev!

Perfect in PC but no in Android

Update:Working perfectly fine again!
Original:Not working anymore! Was useful before!

Doesn't work.

It works, thanks !

it works

it works but i wish i didn't have to refresh website when i toggle the extension in order to make this feature work

It does exactly what it says on the tin. With no added BS.

For some reason, the icon for this add-on is doesn't properly show in the menu. Otherwise, works as advertised.