Emergency Exit is a clever idea for an app. If you're in a building, stadium, airport, casino or other public place and need to get out quickly, Emergency Exit (US$0.99) uses Google Indoor maps to show you where you are and the quickest way out.
As far as it goes, it's a good idea for an app. But that's the problem -- it doesn't go very far at all, because Google Indoor coverage isn't exactly broad. Here in the US, the app shows only 55 locations; there are just four in Spain; 15 in the UK; and so on. Being at the right place at the wrong time to get the benefit of the emergency info in the app would be a sheer coincidence.
I tried the app at the Phoenix (Ariz.) Airport and that location wasn't recognized. I needed to be at the airports in Los Angeles or San Francisco, or some of the other cities and places covered.