SentakuGuard: Rain Watch

Hang your laundry, tap one button, and let SentakuGuard stand watch. It keeps an eye on approaching rain clouds and sudden downpours, shows the risk right on your Lock Screen and Dynamic Island as a Live Activity, and warns you before the rain reaches your laundry — so you can bring it in dry. One purpose, done well: from "Hung out" to "Brought in".