FocusTube

The extension turns off. YouTube goes back to normal. You will not lose any data. If you want to keep going, upgrade before day 3.

Yes. You can change your plan at any time. If you switch to annual mid-month, the remaining days carry over.

One payment of $99 for the Chrome extension. FocusTube works forever. No future charges. You lock in the founding member rate before it goes up. Lifetime is Chrome-only; iOS uses Apple's subscription system.

All of them. FocusTube watches every video, classifies it against your goals, and tracks your full session. No exceptions.