There isn't an app.
I want to say you have to enter an email address. There were instructions, some what in one of the packets in the seat in front of you. It's been almost a year since I flew the, flying them 2 weeks from tomorrow..warm weather, no wind, warm weather, no wind.
I didn't watch movies but I did text and I posted plane pictures to Facebook. And checked to see where we were on google maps, lol!