Weather4D Routing 4+

Go when the wind is right


    • $39.99
    • Offers In-App Purchases



Weather4D Routing is an outstanding meteorological and routing application based on weather and ocean data in GRIB format as well as the speed characteristics of the sailing boat (polar) and its minimum speed when operated with its engine. It benefits from an interface derived from the “Routing & Navigation” version.

GFS model is provided by default. In addition, over 35 weather and oceanographic models are available with a yearly subscription (in-app purchase). Queries and downloads are fully customizable.

The application makes it possible to create your own geographical zones and to select the characteristics of the GRIB files to download: choice of data, resolution, periodicity, file size, etc. GRIB files can be downloaded wherever you are from our servers through a regular or satellite internet connection.

Weather4D Routing displays the combined data as layered layers. All the data of a selected model is displayed by an animation in continuous time scrolling or in manual scrolling on the map.

The weather forecast is displayed in one or two windows (iPad only), offering several display combinations of the same area: navigation and weather, weather and waves or currents, comparison of different models. The two windows can be disassociated for displaying the same area at different scales.

Weather4D Routing makes it possible to optimize sailing or engine, or mixed sail-engine routes. From a theoretical route, a routing algorithm will take into account wind force and wave height constraints. When sailing, the boat polar combined with wind and current forecasts will be used to optimize performance, comfort and safety.

Several routes can be displayed to compare the outcome of different options: different forecast patterns, departure dates and times, selected constraint values. The routing can be restarted at any moment during navigation from the actual position of the boat.

Default Models and Charts
GFS global forecast model at 0.25 °, 0.5 °, 1 ° and 2 ° resolutions.
BING global chart
OSM (Opens Street Map) global chart

Optional Models (in-app purchase):
GEM Global
COAMPS Europe, West Atlantic, Central America, East Pacific
ICON-EU Europe
ARPEGE Global, Europe
AROME France, Antilles, Guyane, Polynésie, Calédonie, Indien
WRF France, Europe, Greece, NW Africa, Azores, Lesser Antilles, Greater Antilles

MFWAM Global, Europe, France
FNMOC WW3 Global, Europe

MyOcean Global, IBI, NWS, Baltic, Med

What’s New

Version 2.0.58

- Models deleted: COAMPS, FNMOC, GEM, WRFs

Ratings and Reviews

Evansstarzinger ,

Version 1.3 "missing"

Version 1.3 of this app can apparently do full isochrone routing, and the text in the App Store says that 1.3 is the current version. However, when I paid and downloaded the app I got version 1.1, which ones NOT do routing, and the App Store says I have the latest version. So it appears that the version actually in the store does not match the text description.

methedude ,

Awesome weather routing and weather app!

Don't know what happened to my lengthy first review. Seems to have just disappeared. So here is the short version. This app ROCKS! The weather predictions have been spot on and the weather routing is impressive. Speaking of impressive, the authors availability! I had a concern about routing and emailed him. He replied almost immediately (considering he is in Europe and I am in the States) and advised why it wasn't working and that he would have it fixed in the next release. The issue was that I was trying to route and there was some land in the way. Even though I went around it, the program could have used it and therefore failed. He has it excluded now and all works wonderfully. Again, TOP NOTCH. Yes, the price is more than your usual app, but this is a PRO app. It is substantially less than my last weather routing program by a few thousand. Yes, THOUSAND.

Harvison ,


I was quite skeptical at first. I watched this app for quite some time and after a couple of updates, I finally decided to take the plunge. I was really thinking it was way overpriced, but after using the app for a few days now, as the title says, I'm quite impressed. It is well designed and after only a few minutes, very user friendly. My only regret, was waiting too long to make the plunge.

The only concern, it must be memory hungry. It will crash upon start until it takes back the memory and then runs like a champ.

App Privacy

The developer, APP4NAV, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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