A must for passage planning
This app was recommended to me by a Cruising World editor and has since been my most used app when weather routing for sailing passages. I also bought the in app purchase routing - its very basic but gets the job done. You can vary your departure time and predicted speed to see what the GRIBs look like for a given time on your trip. It would be nice to be able to plug in different speeds for each leg, but thats not available at this time. The in app purchase for Tidetech was not useful to me as it only pulls 1 GRIB each 24 hours. I also had a bad URL error at first when I got the Tidetech plugin - Weathertrack help got back to me almost immediately and Tidetech fixed the problem within a day.
Having the gribs downloaded to the phone for reference offshore is a wonderful feature. I have not exported them to be read by my charting program but plan to do so soon. All in all, this has been a great addition to my weather routing basket - Id buy both the app and the routing again.
On Watch Sailing about
WeatherTrack GRIB