Calorie
A calorie, on a food label and in everyday use, is the kilocalorie: the unit in which the energy a food gives the body is counted. IZeat counts every item a customer says in calories, keeps the source of each figure, and sums them into a meal and a day compared to the target the customer chose.
The word hides a factor of a thousand: the scientific calorie is tiny, and what labels, tables and trackers call a calorie is a kilocalorie, written kcal. IZeat only ever means kcal. An item's calories come from its source, a label, a reference table scaled to the weight said, the customer's own figure or an estimate; they are stored exact per item and the meal and the day are rounded once when they are computed.
Calories are the unit people argue about and the one that matters least in isolation: two days at the same total can be a day of chicken and rice and a day of pastry, which is why IZeat keeps the three macros next to the calories on every reply and every card. What a calorie count is good for is the trend, and a trend is only as good as the record behind it; a record that costs half an hour a day is the one that stops.
Put it into practice: Estimates and sources.
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