This is awesome! I would also pay for this after I've seen the privacy-aware and clear onboarding!

Feature request:

"Focus mode"

Ability to start a focus session for 30m, 1h, 2h etc. in addition to having the schedule. E.g. by default my schedule allows browsing reddit on the weekend, but if I need to get something done on Sunday I can get click the focus button. Or disable schedule and use it only in focus sessions. For now I can only either change the schedule constantly or disable/enable the extension. A simple "Focus" button would solve those 2 cases.

The focus mode could even countdown the focus time with a different colour.

This would replace RescueTime for me and I've been a paid user for years.