Favorite Apps for Navigation or Weather at Sea?

From wind forecasting to tide charts, what apps or tools help you plan ahead?

I lean on PredictWind Offshore to preload 3–5 days of GRIBs (wind, waves, currents) before leaving, then sanity-check gusts and fronts on Windy: https://www.windy.com. Models can lie like fishermen, so I compare ECMWF vs GFS and watch the barometer — what sat comm are you on for updates at sea? I usually pull GRIBs over Iridium GO.

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