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In the pages following are some travel apps that we think are well worth using to let your smartphone add value to your trip.
Some will save you money, some may save your life and some will just make your trip more fun — or simply help you boast about it to your mates.
Please note that some of these apps will be better with, or will require you to have, an internet connection. They were all tested on an iPhone 4, but we have noted when they're available on any other mobile operating systems.