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LuckGrib vs GWeatherRouting: catalog facts
LuckGrib	GWeatherRouting

Best for: Sailors planning passages with GRIB weather forecasts	Best for: Sailors planning coastal or offshore routes with weather forecasts
Paid Purchased through the Apple App Store.	Free Free and open source under GPL-3.0-or-later.
macOS, iOS	Windows, Linux
Direct downloads of GFS, CMC and WW3 models Weather routing for sailing passages Designed for use while offshore Fast animated forecast display	Plans routes using GRIB weather data and boat polar diagrams Imports and exports GPX points and tracks Supports chart formats including GeoJSON, KAP, and GeoTIFF Available for Linux and Windows
Apple platforms only Paid app	The listed downloads are for Linux and Windows
Downloadable app	Downloadable app
Not open source	Open source
License not stated	License: GPL-3.0-or-later
Not stated if an account is needed	Not stated if an account is needed
Offline features available	Not stated if it works offline
Official website Full listing and sources Sources for LuckGrib luckgrib.com apps.apple.com/us/app/luckgrib/id1318450117 Catalog checked October 2, 2026	Official website Full listing and sources Sources for GWeatherRouting gweatherrouting.org Catalog checked October 8, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.