Great for globetrotters
Im an airline pilot and obviously find myself all over the world, riding subways while enjoying cities all over. Im regularly pulling out AllSubway to see how to get from place to place. Data roaming is prohibitively expensive when Im overseas and often unavailable when underground, but my transit maps are always at hand. Invaluable for globetrotters.
My only suggestion: being able to select a "default city" so that when the app opens, it takes you right to that city, or the city that you are in based on GPS location.
darkpilot about
AllSubway, v3.5