Best ways to personally track time spent on Youtube/Reddit/etc?

In the last month or so, I've been meandering towards spending more time absentmindedly browsing the ol' social medias. I want to get some data in front of my face to see my wasted time, and the obvious solution is installing a webtracker.

I'm sure a sub like this considers inentionally installing a webtracker to be sacrilege, but I consider my time to be a higher priority at this point.

So the question is: Is there a recommended application (desktop …

etc privacy reddit youtube