Have you ever looked down and wondered what is actually under your feet? Not the floor. Further. One tap shows where you are on one map and the exact opposite side of the globe on the other, each with an address when there is one to find.
Allow location once and the answer appears. No account, no setup, no coordinates to type. The whole app is one big button on a green screen.
Your spot on top, the antipode below, each with the nearest address the map can find. Tap either map for a fullscreen view you can pan and zoom.
Land covers less than a third of the planet, so for most people the answer is a named ocean. A few lucky places get a real street address on the far side.
"If you dug straight down, where would you come out?" Open the app, tap, and pass the phone around. No menus, no settings, no onboarding to get through first.
For the curious: in the last week of October the fullscreen map dresses up for Halloween.
Free, supported by one small banner ad under the maps.