This app was mentioned in 2 comments, with an average of 1.50 upvotes
On Android, when I drove SEA, I used Flight Stats https://play.google.com/store/apps/details?id=com.conducivetech.android.traveler&hl=en to tell me when the flights were due.
Limo Tab was actually a pretty handy way to quickly put up a sign with a rider's name (meant for a tablet) https://play.google.com/store/apps/details?id=com.kemiphone.regal.mobile.android.view&hl=en