[hengheng]

Every fitness tracker can already do this, or at least could, yet it's not really taking off. I'm guessing that blame and negative emotion are not the best ways to sell stuff.

Except maybe if they are physical products. Having a thing or a person that reminds me of my chores is probably easier on me than a non-local notification system that makes my whole e-mail experience unpleasant, or social media experience, or even spoils my whole phone.