Really like this. I might use it as a way to keep myself accountable.
I wonder if the screenshots can easily be categorized as "time wasting" vs "productive" (possibly via ML model?). Could optionally gamify statistics. Example last hour: 78% productive, 12% hacker news, 10% inactive. You could go for your own high score (e.g. 3 x 100% hours in a day would probably be a great day for me!).
PS: love the video demo. I figured out what this does in < 30 seconds. Thank you!
PPS: (very tangental) video speed controller (browser addon) now works with loom videos - a few months ago that wasn't the case.