Stuck in the airport after missing a connecting flight? Theres an app for that, as the people at Apple like to say. In truth, theres an iPhone application for just about everything these days, especially travel. Weve rounded up some of the best trip-friendly apps, from electronic postcards to where to find cheap gas. And dont forget to turn off data roaming before you hit the road so youre not whacked with some nasty surcharges when you get back. Unfortunately, theres no app for that.
— Nicole Cammorata, Globe Staff
(Yoon S. Byun/Globe Staff)