Terminal Maps is a really cool app that shows the terminal maps for whoever is traveling. I go on many business trips throughout the year and sometimes I get stuck in some airports because of layovers and while walking around aimlessly in the airport while waiting for my next flight, it's always handy to have an map that tells you were all the necessities are. Currently there are 40 airports but the developer is always updating them and one great thing I love about this app is you do not need internet access to see them!

On the maps it is really detailed and they have maps, restaurants, shopping, airline clubs and even airport history.

I recommend this for frequent flyers!