My thoughts exactly: where are you? As Mike points out, Foreflight is the king in the US, but Garmin Pilot is a very close second. If you are an Android person instead of an iOS person then Garmin Pilot is by far the best (and most expensive
) choice. Pilot has come a long way in the last couple of years on the Android platform (which is what I use) and now has logging, weight & balance, and a bunch of other stuff that was only available on iOS for a long time.