Sunza checks the forecast for your destination and builds a packing list that shows you why every item's on it.
Snap your clothes once and Sunza sorts them into a wardrobe. Then it suggests your own garments for the trip — each with its weather reason, like the rest of the list. So the list says your grey fleece, not “a warm layer.”
A destination and your date range. Nothing else.
For your exact window at your exact place.
Every line says why it's there. It works offline, too — so it's with you at the airport.