Mirror, and what it won't say

Mirror reports patterns in what you already logged. It never predicts, never prescribes, and stays quiet when there isn't enough data to say anything honest.

Energy balance reads your weight trend to estimate what you're actually burning, so it needs weigh-ins rather than a full food log. It shows a RANGE, in words, because the honest answer spans a span rather than landing on one number.

A longer window narrows that range far more than weighing in more often does. The fit needs time to tell a real drift apart from the pound or two your weight swings day to day, which is why the 7-day view does not show a balance at all.

Nothing here is medical advice, and none of it is a target to hit.