When you're on the go, smartphone apps can save you time and money. They can get you a steep five-star hotel discount at the last minute, show you the quickest way to navigate London's Tube, even keep you in touch with your family for free from 8,000 miles away.
Here are some of the things that you can accomplish with the best of the bunch...
Visit Condé Nast Traveler's website to see more travel apps.
-- Wendy Perrin, Condé Nast Traveler
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