Most calorie tracking apps fail beginners in the first week. Not because people lack discipline, but because the apps ask for too much: weigh every gram, search through endless food databases, and decode charts before you have even finished your first day. I built CalyFit around the opposite idea: the simplest calorie tracking for busy people and beginners. Here is what building it taught me. 1. Every extra tap loses a user The first version of my food log had portion sizes, c...