Comparison

PredictWind Offshore Weather vs LuckGrib

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PredictWind Offshore Weather

Access detailed offshore weather forecasts and marine tools for coastal and offshore passages. Download GRIB files, view weather routes, and utilize advanced marine data for safe and efficient navigation.

Highlights
  • Download GRIB files
  • View weather routes
  • Access forecast models
  • Marine tools
  • Weather routing
  • GPS tracking
  • AIS data
Features
Read full description

The Offshore App allows you to seamlessly download multiple GRIB files for your coastal and offshore passages. Quickly download and view GRIB files, weather routes, GMDSS maps and text forecasts, AIS data and satellite imagery. Access all the world’s top ranking forecast models for reliable and accurate weather data, including ECMWF, SPIRE, UKMO, GFS and more. Our very own PWG & PWE models offer incredible accuracy and a record-breaking 1km resolution. In addition to forecasts, the Offshore App also provides a suite of powerful marine tools to save you time and keep you safe at sea. Weather Routing and Departure Planning is calculated in the PredictWind cloud at the highest resolution. The finished route is then sent back to your boat in an incredibly small file size which is ideal for low bandwidth satellite and SSB connections. The Offshore App works with Wi-Fi, mobile networks, and most satellite connections using an Iridium GO!, Globalstar or Optimizer device. ADDITIONAL FEATURES GRIB file viewer: High resolution forecasts maps with animated streamlines, wind barbs or arrows. Tables: The ultimate dashboard for detailed analysis. Graphs: Compare multiple parameters at the same time. GMDSS Forecasts: View either in the traditional text format or on a map. Destination Spot Forecast: Know exactly what the weather is doing at your destination. Live Observations: Know what’s happening right now out on the water. Ocean Data: See what’s happening under the waves with ocean and tidal currents, and sea temperature. GPS Tracking: Get a free customised GPS tracking page for your blog or website. AIS Data: View over 280,000 vessels worldwide on the AIS network.

About

LuckGrib

This app provides advanced weather data visualization, downloading, and routing for sailors and weather enthusiasts. It offers access to a wide range of global and high-resolution weather and ocean models, with features for optimizing routes and analyzing complex weather parameters. Remote access via satellite is also supported.

Highlights
  • 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
Features
Read full description

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/

Screenshots

PredictWind Offshore Weather4 screens
LuckGrib4 screens

Verdict

The call

The clearest difference is rating: LuckGrib at 4.9 against PredictWind Offshore Weather's 3.5. LuckGrib also leads on review sentiment (93% vs 54%) and ratings volume (343 vs 41). PredictWind Offshore Weather's advantage is in-app purchases (none vs 6) and update cadence (monthly vs every 2 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. LuckGrib sells 6 one-off in-app purchases. PredictWind Offshore Weather asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

LuckGrib holds the better App Store score, 4.9 against 3.5. That said, the two scores are not equally well evidenced: LuckGrib has 343 ratings behind it against 41, so its average is the more settled of the two. Written reviews point the same way: 54% of PredictWind Offshore Weather's written reviews are positive against 93% of LuckGrib's.

UpkeepUpdate frequency

PredictWind Offshore Weather ships an update monthly, LuckGrib every 2 months. Both last shipped on October 26, 2026.

Scorecard7 real differences · 3 level
PredictWind Offshore Weather versus LuckGrib: the parameters behind the verdict, then further details
ParameterPredictWind Offshore WeatherLuckGrib
PriceFreeFree
Rating3.5 (41 ratings)4.9 (343 ratings) — better
Positive reviews54.3% of reviews92.7% of reviews — better
Number of ratings41343 — better
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.4 — better18.4
Further details — not scored
Size527 MB173 MB
Age rating4+4+
DeveloperPredictWind LimitedCraig McPheeters

Customer experience

PredictWind Offshore Weather

All ratings41 ratings
Positive58.5%
Neutral7.3%
Negative34.1%
Written reviews35 reviews
Positive54.3%
Neutral5.7%
Negative40.0%

LuckGrib

All ratings338 ratings
Positive96.7%
Neutral2.1%
Negative1.2%
Written reviews124 reviews
Positive92.7%
Neutral2.4%
Negative4.8%

Bugs and requests

PredictWind Offshore Weather

Not enough reviews yet to summarise bugs or requests.

LuckGrib

Reported bugs

2 issues
  • Reported issues with 'no wind data for start time'
  • Occasional app crashes or freezes

Requested features

3 requests
  • Integration with boat instruments and data logging
  • More advanced routing options and customization
  • Improved support for regional weather models

In-app purchases

None

PredictWind Offshore Weather

No in-app purchases

6 purchases

LuckGrib

One-time6
  • 14-day TrialFree
  • 14 day trial of Offshore DataFree
  • 14 day Weather Routing trialFree
Show 3 more
  • LuckGrib weather data access$29.99
  • Premium Offshore Data access$59.99
  • Weather Routing access$59.99

Questions

Is PredictWind Offshore Weather free?
PredictWind Offshore Weather is free to download, with no in-app purchases.
Is LuckGrib free?
LuckGrib is free to download, with in-app purchases available.
Which has better reviews, PredictWind Offshore Weather or LuckGrib?
LuckGrib is rated higher. PredictWind Offshore Weather averages 3.5 out of 5 from 41 ratings, while LuckGrib averages 4.9 from 343 ratings.
Do PredictWind Offshore Weather or LuckGrib have ads?
Neither PredictWind Offshore Weather nor LuckGrib shows ads.
Which is updated more often, PredictWind Offshore Weather or LuckGrib?
PredictWind Offshore Weather ships an update monthly, and LuckGrib every 2 months. Most recently, PredictWind Offshore Weather was updated on October 26, 2026 and LuckGrib on October 26, 2026.

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