It's simple and it shows the time correctly, I don't know what more do you need. The only problems I have are that the logo doesn't appear on the extensions bar (it shows the default icon) and that I can't find the .json with all the info on my computer

Tracks your total YouTube time and that's it. 👍

Darn it. I thought this was going to help me to remember where I was up to in a video. Youtube almost never does it properly.