Spring is . . . well, if not in the air, then at least on the hardwood. March Madness is in full swing, and those who don’t want to miss a moment more can download the NCAA March Madness Live app — the definitive mobile source for everything college basketball this time of year. Those who log in with their television provider credentials gain access to a lot of free game streams. And for those who don’t have a log-in, the app will tell you which channels are playing your games and notify you when they’re about to start. You can also get news, see the schedule and check how the real bracket is shaking out — even if the tournament doesn’t go as you predicted. Free, for iOS and Android.