I have been using sail flow (the free features) on a recent sailing trip to the gulf and San Juan islands and the app has been very useful in understanding the current and forecasted weather patterns. What I see in the app match with current weather as well as recent forecasts. This isnt a substitution for other sources of weather information like the weather radio channels and what you can actually see and feel but it is a great companion. My fav way of using it is to put it in the ‘forecast maps view’ and zoom out to see the area covering my planned route. The ability to fast forward in time and see how the forecast changes is invaluable.
shyam.habarakada about SailFlow: Marine Forecasts