It's no secret: traveling is a total pain. Between security checks, custom lines, and jet-lag, sometimes it's easier just to stay home. But not everything has to be so difficult-- with your iPhone in hand, there's almost nothing you can't do. From photography, to keeping in touch, to navigating a new city, we've found 7 apps that will make any trip seem like a breeze. So pack your bags, charge your phone, and relax!