Caution
I just got back from a trip and I was looking forward to using Flight+. It stored all the information I needed and seemed to give very good updates. However, the information was often wrong. My flight times for two flights were off by about 1 or 2 hours (the app showed later than they actually were). Secondly, another flight showed as being two hours delayed, but it left on time.
Overall, I would say its good for storing information about your flights, but if you need up-to-date and accurate information on arrivals and departures, dont trust the data in the app--look at the airports website or the arrivals/departures boards at the airport. Most important--if the app says your flight will be delayed, dont trust it--get some other information because otherwise you may be sitting in the airport after your flight has left.
TravelNorth about
The Flight Tracker Pro, v1.51