Saily WR on the App Store, for iPhone and iPad
Saily WR is now a free app for iPhone and iPad: each routing stays on board with its wind and current, readable once the signal is gone.
Three miles out, the phone loses its signal, and with it the page that held the route: close it by mistake, or let the phone reload it, and the routing computed in the harbour is gone just as the passage begins. A sailor needs the route where the boat goes, not only where the network reaches.
Saily WR is now an app for iPhone and iPad, free on the App Store. It is the routing page you know, the boat, the trip and one route per weather model, but each routing computed is kept on the device, and right after the computation the app downloads the wind of each model's route and the current around them, for the whole passage: a download worth letting finish before the signal goes.
Out of range, the app switches to offline mode by itself and keeps what it shows; opened at sea, it shows the latest routing kept, the others waiting in My routings, fifty of them, and more if you pin some. The routes, the time cursor and the wind and current on the map stay readable; an app opened offline only lacks the map's detail and its depths. The rest comes along too: signing in with Google or Apple finds your boat again, a route goes to the plotter as a GPX file, and the departure can be placed where the phone's GPS puts you.
Take Antibes to Calvi, a day's crossing with hours out of reach of any phone mast. The routing is computed on the pontoon the evening before. Mid-crossing, the wind shifts earlier than planned: slide the time cursor to the hour, pick each model's route in turn, and the app shows where that model put the boat and the wind it forecast there; the model that saw the shift coming is the one to follow for the rest of the way, without a single bar of signal.
A route is still computed on Saily WR's servers: offline, there is no new routing, and the one kept is the forecast of the moment it was computed, so compute it again once the signal returns to sail on the latest runs. The wind and current come down with the routing from iOS and iPadOS 16.4. And the Android app is coming soon to the Play Store; until then, Saily WR works in the browser of any Android phone.