Comparison

LuckGrib vs Nullschool

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

Head to head
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/

About

Nullschool

Visualize global weather, ocean, and pollution data on an interactive map. Explore current conditions, forecasts up to 5 days, and historical data. Discover atmospheric phenomena like hurricanes, jet streams, and pollution spread.

Highlights
  • Interactive animated global map
  • Wind, ocean, and pollution layers
  • Current conditions and 5-day forecasts
  • Historical data access
  • Aurora and wildfire tracking
  • Subscription for extra features
Features
Read full description

The official app of the popular website earth.nullschool.net! Explore wind, weather, ocean, and pollution conditions, as forecast by supercomputers, on an interactive animated map. Numerous features are available: - Current conditions, forecasts up to 5 days (depending on the data source), and historical data going back many years - Physical layers: wind, temperature, relative humidity, wet bulb temperature, precipitation, MSLP, CAPE, and more - Chemistry and aerosol layers: PM 2.5, CO2, sulfate, and other pollutants - Ocean layers: waves, currents, swells, sea surface temps, coral bleaching - Aurora - Wildfires Explore Earth's atmosphere and oceans wherever your curiosity takes you: - Watch how hurricanes and typhoons form and pull heat from the ocean - See the jet stream and polar vortex - Follow the Kuroshio, Alguhas, and Gulf Stream - Learn how pollution spreads across the globe This app offers paid subscriptions so you can help Nullschool keep the lights on and develop new features. Plus, you get some neat extras: - Curate a gallery of favorites - Save and share screenshots - Generate QR codes for easy linking Who knows what you're going to find?

Screenshots

LuckGrib4 screens
Nullschool4 screens

Verdict

The call

The clearest difference is ratings volume: LuckGrib at 338 against Nullschool's 27. Nullschool's advantage is chart position (#49 vs unranked) and update cadence (monthly vs every 2 months). On price, rating, review sentiment and ads 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 and Nullschool sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for LuckGrib against 5.0 for Nullschool. That said, the two scores are not equally well evidenced: LuckGrib has 338 ratings behind it against 27, so its average is the more settled of the two. Written reviews are what separate them: 93% of LuckGrib's written reviews are positive against 100% of Nullschool's.

UpkeepUpdate frequency

LuckGrib ships an update every 2 months, Nullschool monthly. The most recent releases landed on September 25, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 7 level
LuckGrib versus Nullschool: the parameters behind the verdict, then further details
ParameterLuckGribNullschool
PriceFreeFree
Rating4.9 (338 ratings)5.0 (27 ratings) — better
Positive reviews92.7% of reviews100.0% of reviews — better
Number of ratings338 — better27
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank—#49 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.415.1 — better
Further details — not scored
Size173 MB31 MB
Age rating4+4+
DeveloperCraig McPheetersNullschool Technologies Inc.

Customer experience

LuckGrib

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

Nullschool

All ratings27 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews17 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and 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

Nullschool

Not enough reviews yet to summarise bugs or requests.

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
3 purchases

Nullschool

Subscriptions3
  • Monthly Plan$2.991 Month
  • Annual Plan$29.991 Year
  • Friends of Nullschool$49.991 Year

Questions

Is LuckGrib free?
LuckGrib is free to download, with in-app purchases available.
Is Nullschool free?
Nullschool is free to download, with in-app purchases available.
Which has better reviews, LuckGrib or Nullschool?
Nullschool is rated higher. LuckGrib averages 4.9 out of 5 from 338 ratings, while Nullschool averages 5.0 from 27 ratings.
Do LuckGrib or Nullschool have ads?
Neither LuckGrib nor Nullschool shows ads.
Which is updated more often, LuckGrib or Nullschool?
LuckGrib ships an update every 2 months, and Nullschool monthly. Most recently, LuckGrib was updated on September 25, 2026 and Nullschool on September 23, 2026.

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