Every calculator hands you an estimate and tells you to "recalculate when you stall" — then can't. This one learns. Log your weight over a few weeks and it works out your true daily burn from what actually happened on the scale, so a plateau gets an explanation instead of a guess.
When you log weigh-ins, the tracker fits a trend line through them (so one watery morning can't throw it off) and compares how fast you actually changed against how much you ate. The gap reveals your true maintenance calories — which is usually different from any formula's estimate, because formulas can't see your genetics, NEAT, or how accurately you log food.
If the data is too short or too noisy to read, it tells you to keep logging rather than inventing a confident number. When the trend is clear, it suggests a small adjustment to your daily target — never below your BMR. Start from the planner to set a goal, then track against it here.