These our our choice of apps for boating. Our range of boating is all of Florida--including the Keys and Gulf, plus areas in the Pacific North West. 1. Garmin Blue Chart Mobile. This includes Active captain--one of the best apps, in the excellent Garmin Charts. Garmin also includes wind arrows/velocity. Also Tides and Currents are available on the app. 2. LightningCast (I pad)--gives good radar, plus nearest lightning strike. In some ways I like Hi Def Radar better, but it does not give the up to the minute lightning strikes. 3. Windfinder Pro--good wind velocity reports and predictions (along with tides, current direction, wave height) 4. NOAA Buoy and Tide Data: All NOAA weather stations current conditions easy table or map form. 5. Accuweather: Gives prediction per hour, as well as for 15 days out--seems to be one of the most accurate. We also use Boating Weather--which gives all of the NOAA forecasts summary. For navigation we also use Navionics HD. A friend just finished the "Great Loop" in a 22 foot C Dory ("Salty"}, his primary navigation tool was an I pad, and he used both Blue Charts Mobile, (With an emphasis on the Active Captain part), as well as Navionics. Bob Austin