Stuck with a long layover or a flight delay? Meet your new TFF (travel friend forever), a guide to more than 700 of the world’s airport terminals. (It found us rocking chairs near a live pianist at Charlotte-Douglas International Airport, which helped make a six-hour delay bearable.) Find food, terminal, and gate locations, restrooms, shops, and other services.
Free for Android, iPhone, iPad; www.ifly.com