The most watched thing in a delivery app is a dot on a map. It is also a small lie, told every few seconds: the courier's position arrives as a fix, and between fixes the dot has nowhere to go. Jump it and it looks broken. Animate it badly and it drives through buildings.
On Galley's tracking screen the dot glides from the last position to the new one over about the time until the next fix is expected, and it faces the way it is moving. If a fix is late, the dot waits rather than guessing. When the courier is close, the map zooms to keep both the dot and the door in view, because that is the moment people watch.
The location comes through the same Serverpod stream as the order status, so the screen has one source of truth for a delivery. The call and message buttons sit below the map, within reach of a thumb. The best compliment the screen can get is that nobody notices it: the dot just seems to be driving.