I was doing a cross country yesterday with a student who has Foreflight (tried to sell her on iFly wthout luck), As we approached our destination, a little meesage appeared on screen telling us the AWOS frequency at our destination. IPretty neat feature IMHO.
I figured (seeing as iFly is just better!) that we could do a step further. Have a popup with user definable parameters that pops up at <user definable> NM from (landing) destination. You could include frequencies, METAR, Runway info, TPA, etc, but have what shows (or not have anything show) definable by the user.