I was looking for an app that would help me customize my shipping zones, and I love how I can select an area on the map and turn that into a shipping zone. Two features that I feel would make it a 5-star app are:
1. When creating a zone, show the other zones on the map so it's easier to prevent overlaps of zones.
2. Have more control over the drawing of zones on the map. Once you place a dot on the map, you can't undo it. Often I found myself redrawing a zone from scratch if I made a mistake. Aside from those two things, the app is awesome! Definitely recommend.