# LuckGrib — #1 for sailors and enthusiasts > Advanced GRIB reader, viewer, downloader, and weather router for sailors and meteorologists. (iPhone/iPad app by Craig McPheeters.) - Source: https://appshunter.io/ios/app/luckgrib/id1318450117 (this page in markdown: same URL + `.md`) - Developer: [Craig McPheeters](https://appshunter.io/developer/590365129) - Category: Weather, Travel - Price: Free with in-app purchases - Rating: 4.90/5 from 338 App Store ratings · 124 written reviews indexed - Age rating: 4+ - Requires: iOS 18.4 · 173 MB - Languages: American English - Released: 2018-03-31 - Data updated: 2026-09-02 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/luckgrib/id1318450117/reviews.md ## What is LuckGrib? LuckGrib is a fully featured, easy to use, fast GRIB reader, viewer, downloader and weather router. Remote access to weather data via satellite. Advanced weather routing capabilities, for sailors, is available. Weather forecast data, packaged as GRIB files, can be downloaded directly from the LuckGrib server cluster. Downloads are available via: a direct high speed internet connection, or through the Iridium GO! as well as through the RedPort Optimizer. For sailors, LuckGrib offers a best-in-class, complete solution: industry leading visualization and ease of use, highly optimized weather data downloads via satellite, along with industry leading optimized weather routing and route analysis. Inshore sailors may not require satellite downloads, but will benefit from the rest of the system. LuckGrib is unique among apps that were originally designed for sailors, in that the weather analysis tools are powerful enough to attract attention from meteorologitsts. For sailors, meteorologists, and all weather enthusiasts, LuckGrib offers access to a wide range of high resolutions models, a number of global models, weather data at the surface, 850mb, 500mb and 250mb levels, parameters ranging from simple things such as wind, pressure and temperature, to more advanced quantities such as simulated radar, standard deviations, precipitable water, lightning, vertical vorticity, helicity and more. LuckGrib is a thoroughly modern and advanced GRIB viewer. LuckGrib provides access to many weather and ocean models, including global models such as GFS and ECMWF along with many high resolution models, which vary according to the region you are interested in. In the USA, there is the HRRR, NAM, NBM and many others. In Europe there is Icon-EU, Arpège, Arome, the Danish DINI and others. There are several ocean current models, such as the global RTOFS and Mercator Ocean, along with regional higher resolution models such as OFS, NCOM, CMEMS and others. The LuckGrib weather routing system is an industry leading, high quality, robust, high performance and comprehensive system. The LuckGrib isochronal Weather Routing solver has many unique features, such as being able to respect constraints (points that must be left to port or starboard,) deal with routes which require you to heave-to, outstanding visualization and interactivity features, and much more. LuckGrib comes with a 14 day free trial, or free access to reduced resolution downloads (LuckGrib Lite) for users who do not require access to the most accurate data. If you are interested in studying weather and gaining access to detailed weather forecasts, download the app and give it a try. Downloading data via satellite requires the Offshore Data in-app purchase. Access to the isochronal weather routing system requires an in-app purchase. Note that LuckGrib does not use a subscription pricing model - after the free trial, when you decide to purchase the app, there will be a one time charge, not an ongoing subscription. For more details, please visit the support website. * for details on the offshore data system: https://offshore.luckgrib.com * for details on weather routing: https://routing.luckgrib.com * for details on weather models: https://luckgrib.com/models * the privacy policy: https://luckgrib.com/privacy * terms of use: https://luckgrib.com/terms-of-use * end user license agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - GRIB file reader, viewer, and downloader - Advanced weather routing and route analysis - Satellite data access - High-resolution global and regional weather models - Ocean current models - Detailed weather parameter analysis ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | 14-day Trial | Free | one-time | | LuckGrib weather data access | $29.99 | one-time | | 14 day trial of Offshore Data | Free | one-time | | Premium Offshore Data access | $59.99 | one-time | | 14 day Weather Routing trial | Free | one-time | | Weather Routing access | $59.99 | one-time | ## What do users think of LuckGrib? Overall sentiment: positive **Pros** - 🚀 Excellent weather forecasting and routing - 👍 Intuitive and user-friendly interface - 💡 Wide range of weather models and data sources - 🚢 Tailored for sailors and offshore navigation - 💰 One-time purchase, no subscription fees **Cons** - 🐛 Occasional issues with GRIB file downloads - ⚠️ Steep learning curve for some features - 🔍 Lack of support for some boat types (e.g., catamarans) **Commonly reported bugs** - Reported issues with 'no wind data for start time' - Occasional app crashes or freezes **Most requested features** - Integration with boat instruments and data logging - More advanced routing options and customization - Improved support for regional weather models ## Recent user reviews (10 of 124) All indexed reviews: https://appshunter.io/ios/app/luckgrib/id1318450117/reviews.md ### 1/5 — Scam *2026-05-25, version 2.5.1* How do I bloody stop my trial and why the hell I was already charged?! ### 5/5 — Amazing *2026-05-15, version 2.5.1* This app has everything that those more expensive packages have except it’s less expensive and clearly designed by a sailor ### 5/5 — Incredible for Weather *2026-04-19, version 2.5.1* Excellent, absolutely excellent, as a retired offshore helicopter pilot and a sailor weather has a lot to do with my day to day life. With LuckGrib it shows a very pictorial weather situation. This is a super app for anyone with an interest in weather. ### 5/5 — Vey good *2026-02-27* Good **Developer response:** Thanks! ### 5/5 — Great for sailing decisions! *2026-01-14, version 2.5.1* Our sailing program depends on several of the models in LuckGrib to help us decide if our 3 sailboats with 10 students can sail or reschedule. More thorough and accurate than the other popular weather apps. ### 5/5 — Superb weather app *2025-11-30, version 2.5.1* Extremely versatile tool for weather analysis and passage planning and routing. It’s not as automatic as PW, but is faster and offers better control of parameters and views. A great value for serious sailors. ### 5/5 — Wow *2025-11-28, version 2.5.1* Très complet, pour météorologue amateur! ### 5/5 — Das beste *2025-11-23* Nach viel Literatur für eine geplante Sailing - Circumnavigation über Literatur von David Burch hierher gefunden: präzise Nachvollziehbarkeit der Phänomene, auch aus nicht - App - enthaltenen, aber darin darstellbarer GRIB - Daten des BSH lokaler Strömungsdaten in hoher Auflösung … Herausragendes Weather - Routing !! **Developer response:** Danke! ### 5/5 — BEST weather App EVER! *2025-11-23, version 2.5.1* After 40,000 miles of using “big brand” apps that require a monthly subscription I couldn’t be happier with LuckGrib. PAY ONCE USE FOREVER. The layout and usability is very easy once you spend a few minutes with the included tutorials and from there it just gets better and better! ### 5/5 — The best sailing weather and routing app *2025-11-06, version 2.5* Simple the best and most advanced sailing weather and routing app out there - nothing else is even close. A little more upfront but a good investment and less expensive in the long run. We’ve been depending on it for years as we travel the world. ## Frequently asked questions about LuckGrib ### What does LuckGrib do? LuckGrib is a comprehensive application for reading, viewing, downloading, and routing weather data. It specializes in GRIB files and offers advanced features for sailors and meteorologists, including access to various weather and ocean models and sophisticated route analysis tools. ### What are the key features of LuckGrib? Key features include a fast GRIB reader and viewer, optimized weather data downloads (including via satellite), advanced weather routing with constraint handling, access to a wide range of global and high-resolution weather and ocean models, and detailed analysis of various weather parameters. ### How much does LuckGrib cost? LuckGrib offers a 14-day free trial. After the trial, there is a one-time purchase for the app, not a subscription. Specific features like satellite data downloads and the isochronal weather routing system require separate in-app purchases. ### What weather models does LuckGrib support? LuckGrib supports a wide array of weather and ocean models. This includes global models like GFS and ECMWF, as well as high-resolution regional models such as HRRR, NAM, NBM (USA), Icon-EU, Arpège, Arome, DINI (Europe), and ocean current models like RTOFS, Mercator Ocean, OFS, NCOM, and CMEMS. ### Who would benefit from using LuckGrib? Sailors, from inshore to offshore, will benefit from the visualization, download, and routing capabilities. Meteorologists can utilize the powerful weather analysis tools, and any weather enthusiast can gain access to detailed forecasts from numerous models. ## Version history (last 5 releases) ### 2.5.1 — 2025-11-11 This is a minor update, mostly to keep in sync with the Mac version after an update was required there. ### 2.5 — 2025-05-29 This update has some small and subtle changes scattered throughout the app, as well as a few larger items. Some of the notable changes are: * The default draw styles have been updated to reflect all of the changes on the servers over the past little while. * The Weather Routing tool allows for more flexibility in its GRIB display modes, so, for example, you can view Simulated Radar while evaluating a generated route. * The Weather Routing solver has an additional advanced mode to control the time step, where you specify the minimum and maximum step allowed, and the solver makes adjustments according to the results it is seeing. This should be of use to sailors in constrained waters. * GPX import has improved in various ways. For example, when importing a route via a GPX file, you now have the option of changing the route into a Weather Routing boundary or constraint sequence. * There is now support for route decimation (point reduction) which can be useful if exporting a Weather Route to a device which can not handle too many points. * Polar file export is now supported. Please read the release notes for additional details (available toward the bottom of the Settings area in the sidebar.) ### 2.4.3 — 2023-10-01 This is a small update with various small and subtle changes sprinkled around the app.   One notable addition, mainly for sailors in the USA, is the addition of support for OFS tide height data. The OFS models are high resolution regional models around the USA, which include ocean current and tide height information. There is OFS data for a variety of regions around the USA, including the Salish Sea (including Puget Sound, the San Juans and around Vancouver Island), San Francisco Bay, Tampa, Delaware, and more. ### 2.4.2 — 2023-03-30 This is a small update. Two of the larger changes are: • added three new analysis image types to the weather routing system: true wind direction; change in wind speed; change in wind direction (backing or veering.) • the Offshore Data email system, which has been deprecated for almost a year, has now been removed. Along with these changes, there are several other small enhancements, scattered around the app. ### 2.4.1 — 2022-12-03 This is a small update, containing a few small adjustments and tweaks. The release notes contain a few details. ## Apps similar to LuckGrib | App | Rating | Price | Category | | --- | --- | --- | --- | | [Windy.com](https://appshunter.io/ios/app/windycom/id1161387262) | 4.8 (78,377) | Free | Weather | | [Windy.app — Wind, Tides, Radar](https://appshunter.io/ios/app/windyapp-wind-tides-radar/id997079492) | 4.7 (72,651) | Free | Weather | | [NOAA Marine Weather & Forecast](https://appshunter.io/ios/app/noaa-marine-weather-and-forecast/id1246091778) | 4.5 (5,040) | Free | Weather | | [Weather & Radar](https://appshunter.io/ios/app/weather-and-radar/id545993260) | 4.7 (304,106) | Free | Weather | | [Clime: NOAA Weather Radar Live](https://appshunter.io/ios/app/clime-noaa-weather-radar-live/id749133753) | 4.5 (1,048,141) | Free | Weather | | [Windfinder Pro: Wind & Weather](https://appshunter.io/ios/app/windfinder-pro-wind-and-weather/id336901296) | 4.8 (15,255) | $12.99 | Weather | ## More apps by Craig McPheeters - [Fractally](https://appshunter.io/ios/app/fractally/id1534380451) All apps by Craig McPheeters: https://appshunter.io/developer/590365129 ## Related topics [luck grib](https://appshunter.io/ios/topics/luck-grib) · [gtribe](https://appshunter.io/ios/topics/gtribe) · [gribe](https://appshunter.io/ios/topics/gribe) · [grib](https://appshunter.io/ios/topics/grib) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*