Excellent! One of my little side projects (perpetually in progress, unfortunately) is an Apple Watch app with exactly the same mechanic. (That is, to budget f

Excellent! One of my little side projects (perpetually in progress, unfortunately) is an Apple Watch app with exactly the same mechanic. (That is, to budget food in terms of points where a 1 point == "my estimate of 100 calories", and you adjust your daily budget based on long-term weight change.) The idea is to distill the benefit of tracking calories -- which I think is (1) the basic mindfulness around eating to stop and think for just a second before stuffing something in your mouth; and (2) the valuable feedback loop it creates... while minimizing the tracking tasks. However, I think this is really best for experienced calorie counters because while the estimates don't need to be accurate, they do need to be fairly consistent and proportionate. And, I suspect, you need to be ready to calculate calories when you're facing an unfamiliar meal. I'm encouraged that it has been working for our author.