UnitSenseRuler

UnitSenseRuler is a quiet measuring desk for numbers that are hard to picture. You type an acre, a few kilometers, a kitchen weight, or a kilowatt-hour, and the app answers in things you already know: basketball courts, subway gaps, eggs, a small window cooler running for an hour. The tape on the opening screen lets you drag a magnitude until the brass dial shows a number worth comparing. A personal shelf keeps the rooms, routes, and objects that belong to your own life, so the next reading can use those instead of a generic example. Reverse the question when you want the exact value of one reference, written in the unit you choose. The work stays on this iPhone. There is no account, and the comparisons stay with ordinary places and objects.