If you go to the corner store and get a sandwich, just put a rough estimate of a sandwich based on the sandwich options in your app and what you think seems rig

If you go to the corner store and get a sandwich, just put a rough estimate of a sandwich based on the sandwich options in your app and what you think seems right. You learn to make smart estimates when you start counting the calories on everything. Even then, washy estimates are just fine, just put them on the conservative side (ie, overestimate when you have to estimate). Calories are never an exact numerical science anyways, even if you did weigh everything precisely. You really don't care if you have a margin of error of 50-200 calories if you are lower than your goal most days. You still loose weight. I've been using MyFitnessPal on and off throughout the years and have always been able to consistently gain or loose weight (depending what I am aiming for) even when relying highly on estimates. This is just my experience though.