Measured Daily Burn
The Mifflin–St Jeor formula fits an average person; real people sit noticeably above or below it. PlateSight measures your burn from weigh-ins and logged food and shows both numbers side by side (e.g. 2,449 kcal measured vs 2,284 by formula). The measurement is held within ±20% of the formula, so a week of water weight can't rewrite your target.