Comparison

PredictWind vs Nullschool

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

Head to head
About

PredictWind

Get detailed marine weather forecasts, including wind, wave, tide, and current predictions. Compare multiple global weather models and access high-resolution maps. Optimize your routes and plan departures with AI-powered insights and historical climate data.

Highlights
  • Multiple global weather model comparison
  • High-resolution forecast maps
  • AI-powered weather routing
  • Departure planning tools
  • Tidal and ocean current maps
  • 10-day forecast and climate data
  • Live wind observations and webcams
Features
Read full description

Official weather supplier to the 37th America's Cup and The Ocean Race. Founded by Olympian and two-time America's Cup winner Jon Bilger, and used by over 2 million sailors, cruisers, fishers, boaters, paddlers, wingfoilers and kiters. Free wind, wave, tide, current and rain forecasts for anywhere on the water, from your home harbour to the middle of an ocean. FORECASTS YOU CAN CROSS-CHECK Compare the world's top-ranking models side by side: ECMWF, AIFS, ICON, UKMO and GFS, plus our own PWAi, PWG and PWE models. Add high-resolution regional models including HRRR, RRFS, AROME, ICON D2, UKMO 2K and our exclusive 1 km PWG & PWE, where available. When the models agree, go. When they don't, you know to wait. MAPS BUILT FOR THE WATER High-resolution forecast maps down to 1 km in selected areas for wind, gust, wave, rain, cloud, pressure, CAPE, air and sea temperature, ocean data and solunar, with animated streamlines, wind barbs or arrows and synoptic displays. Split-screen maps compare models or conditions, such as wind alongside currents. DASHBOARD TO SEE EVERYTHING Our new Dashboard brings together your Daily Briefing, wind, wave and tidal current maps, forecast graphs and a 10-day forecast, all in one view. WEATHER ROUTING PredictWind calculates the optimal route for comfort or speed, factoring in wind, wave, tide, ocean current, depth and your sailing yacht's or powerboat's dimensions and performance. Power Routing finds fuel-efficient routes tailored to your powerboat. Plan longer passages with ECMWF ensemble forecasts out to 30 days. DEPARTURE PLANNING See the conditions you'd meet across four departure times, then choose the departure window that suits your boat and your crew. TIDAL AND OCEAN CURRENT MAPS Tidal current maps at 100 m resolution in high-current areas, a 400 m model within 90 km of the coast and 4 km out to 600 km offshore, coupled with global ocean currents for the complete picture. AI ROUTING AND DEPARTURE SUMMARIES Trained for what matters to boaters, our AI summaries give you expert insight to help you make the right call and keep your family, friends and crew safe. PLAN AHEAD WITH CLIMATE DATA Explore 10 years of wind, wave and weather data, with monthly averages and wind and wave roses. Compare typical morning, afternoon and night conditions to choose when and where to sail, race or explore. PASSAGE GUIDE Find the best time of year for passages worldwide, with months rated Good, Marginal or Avoid, plus written summaries of historical conditions and seasonal planning advice. SEE WHAT'S HAPPENING RIGHT NOW Live wind observations, webcams and AIS coverage of more than 280,000 vessels, so you know the real conditions before you leave the dock. Hybrid satellite imagery, global rain radar and lightning overlays help you track approaching weather, rain and thunderstorms. ALSO INCLUDED • Daily Briefing: the forecast as a plain-text summary. • Tables: detailed wind, wave and rain analysis side by side. • Graphs: compare multiple forecasts at once. • Forecast Validation: see which model has been most accurate near you, checked against actual wind observations. • Weather Alerts: get told when your conditions arrive, including GMDSS extreme weather warnings. • Local Knowledge: the best spots, amenities and activities at your destination. • GPS Tracking: a free tracking page for your blog or website with wind data overlaid. • AI Polars: learn your boat's performance for more accurate routing. Requires a DataHub and Professional subscription. • Forecast Replay, Sail Crossover charts and comfort routing modes for maximum roll, vertical acceleration and slamming. Free to download, with forecasts for any location. Basic, Standard and Professional subscriptions add higher-resolution models, longer-range data and expert tools. Terms and conditions: https://www.predictwind.com/about-us/terms-and-conditions Privacy policy: https://www.predictwind.com/about-us/privacy-policy

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
Currently charting
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

PredictWind4 screens
Nullschool4 screens

Verdict

The call

The clearest difference is ratings volume: PredictWind at 33K against Nullschool's 40. PredictWind also leads on update cadence (every 9 days vs monthly) and chart position (#23 vs #136). Nullschool's advantage is review sentiment (100% vs 84%) and rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model 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. PredictWind sells 10 in-app purchases, starting at $6.99 per month 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

Nullschool holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: PredictWind has 33K ratings behind it against 40, so its average is the more settled of the two. Written reviews point the same way: 84% of PredictWind's written reviews are positive against 100% of Nullschool's.

UpkeepUpdate frequency

PredictWind ships an update every 9 days, Nullschool monthly. The most recent releases landed on November 15, 2026 and November 14, 2026 respectively.

Scorecard5 real differences · 6 level
PredictWind versus Nullschool: the parameters behind the verdict, then further details
ParameterPredictWindNullschool
PriceFreeFree
Rating4.8 (33K ratings)5.0 (40 ratings) — better
Positive reviews84.0% of reviews100.0% of reviews — better
Number of ratings33K — better40
Update frequencyEvery 9 days — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#23 — better#136
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size111 MB31 MB
Age rating4+4+
DeveloperPredictWind LimitedNullschool Technologies Inc.

Customer experience

PredictWind

All ratings32,906 ratings
Positive96.8%
Neutral2.1%
Negative1.2%
Written reviews463 reviews
Positive84.0%
Neutral3.2%
Negative12.7%

Nullschool

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

Bugs and requests

PredictWind

Reported bugs

3 issues
  • App crashes or freezes on some devices
  • Inconsistent performance across different locations
  • Subscription issues and billing problems

Requested features

5 requests
  • Improved integration with other apps and charts
  • More frequent weather model updates
  • Earlier weather forecast updates
  • Ability to customize alert settings
  • Improved offline functionality

Nullschool

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

PredictWind

Subscriptions10
  • Basic - Monthly7 Days trial$6.991 Month
  • Basic - 3 Monthly7 Days trial$12.003 Months
  • Basic - Annual7 Days trial$29.001 Year
Show 7 more
  • Standard - Monthly7 Days trial$49.001 Month
  • Standard - 3 Monthly$99.003 Months
  • Professional - Monthly7 Days trial$99.001 Month
  • Standard - 3 Monthly7 Days trial$99.003 Months
  • Standard - Annual7 Days trial$249.001 Year
  • Professional - 3 Monthly7 Days trial$249.003 Months
  • Professional - Annual7 Days trial$499.001 Year
3 purchases

Nullschool

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

Questions

Is PredictWind free?
PredictWind 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, PredictWind or Nullschool?
Nullschool is rated higher. PredictWind averages 4.8 out of 5 from 33K ratings, while Nullschool averages 5.0 from 40 ratings.
Do PredictWind or Nullschool have ads?
Neither PredictWind nor Nullschool shows ads.
Which is updated more often, PredictWind or Nullschool?
PredictWind ships an update every 9 days, and Nullschool monthly. Most recently, PredictWind was updated on November 15, 2026 and Nullschool on November 14, 2026.
Which is more popular, PredictWind or Nullschool?
PredictWind currently peaks at #23 in the App Store charts, and Nullschool at #136. Chart position reflects recent download velocity rather than total install base.

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