I'm a 26 year software engineer. I know good software when I see it! LuckGrib is awesome: useful, intuitive, and very very professionally done. The instructions and guides are 1st rate... as are the youtube video's that walk you through the various ways you can use the software. I highly recommend this package!

This is the best route planning and weather software I am experienced in my 50,000 offshore miles. The program is extremely capable; its design in solving sailing problems is not only well thought out but also explained in literate detail with solution examples to common sailing decision making problems.

It's hard not to pile on good reviews, but this app does so much so well. My use case is sailboat racing and delivering my boat to and from various race locations. I purchased both IOS and OSX versions. Overall: -Usability is excellent, great UI, easy to learn. -Easy GRIB file management particularly area selection, file updates. -Routing is effortless and provides all the information you need per segment (wind speed, wind angle, boat direction, true wind angle). -The polars for my boat are in the library, but you can add your own. -The routing is very smart; it routes around land boundaries, creates optimal sail plans, estimates motoring time. A must-have for any serious sailor!

I've been using the licensed version of this app for a few days now, and I basically can't fault it. Aesthetically and functionally, it is 100% fit for purpose, and beats competing, subscription-based maritime weather services hands down. Plus, the develper is very responsive to feedback.

The latest version of LuckGrib, including the Weather Routing add-on, is an amazing and powerful piece of software that really works. Comparable weather routing software cost hundreds if not thousands of dollars. The app allows the sailor to download data and design and evaluate routes while underway. Bravo!

Incredible app that has all the data and stunning visualizations

This wonderful app lets you retrieve, manage, and display GRIB files (weather forecasts). It's well-written, the author is very responsive and personable, and it looks gorgeous. I bought it a month or so ago and asked for a legend for values -- you can roll over points on the screen to see a detailed list of the attributes at that point which can include anything from temperature at the surface to dew point high up in the atmosphere, but when looking at the map as a whole I thought a legend would be helpful, and voila, it appeared in the latest update. Trying to predict the weather from this professional-level data isn't super easy, but it's a very fun hobby. I'm not a sailor, and for offshore sailboat people I'd say this app is an essential.

Simply the best SW program I have found for analysis of weather and determining passage making windows. I have tried virtually all of them. The developer is a sailboat cruiser and has written the code from a users perspective. Robust feature set and customization that allows one to tune the analysis and routing for specific boat parameters. Developer provides 14 day free trial and thorough documentation. Predictwind is bone knives and rockhammers compared to this app

I was a little confused using the app at first, but once you see that the text are menu buttons or that when items are selected different menus are available when you click on the map, it all make sense. I receive gribs via HF radio using the app's email server but also SailDocs server. YYYou can import GPX file such as FastSeas weather routing routes and have a vessel follow the route as the grib time advancing. powerful and cool. I am still finding features such as OCEANS ocean currents showing the state of the Gulf Stream. Many many features, pretty easy to learn once you get a few simple basics. They have youtube intro and plenty documentation online. But best of all in the price. I bought the macos version and was soo impressed that I purchased the iOS vesrion for the ipad too.

I was doing some software development with large GRIB files downloaded directly from NOAA and using LuckGrib to check my work that I was reading the files correctly. After some painstaking work I confirmed that LuckGrib and my software were in agreement. That is, they had the correct data at the correct latitude longitude. On the other hand, another GRIB viewer, from a well known commercial company, failed on these full size files. It showed 5 knots wind, where there should have been a hurricane! So now, LuckGrib is my go-to GRIB viewer. Good work Craig.