PredictWind vs iWindsurf
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PredictWind
Get accurate marine weather forecasts and powerful tools for wind, wave, and currents. Optimize your time on the water, stay safe, and make the most of every outing with detailed data and routing features.
- Accurate marine weather forecasts
- Wind, wave, and current data
- Weather Routing calculations
- Departure Planning summaries
- High-resolution weather maps
- Live wind observations
- Weather alerts
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Accurate marine weather forecasts and powerful tools utilizing wind, wave and currents, save you time, keep you safe and ensure you get the most out of every day on the water. Access the world’s top-ranking forecast models for reliable and accurate wind and weather data, including ECMWF, AIFS, ICON, UKMO, GFS, and more. Our very own PWAi, PWG & PWE models deliver unmatched accuracy in the short-to-medium range. View high resolution marine weather maps for wind, gust, CAPE, wave, rain, cloud, pressure, air temperature, sea temperature, ocean data and solunar. Suitable for sailing yacht, powerboat and any other marine weather activity. In addition to marine forecasts, PredictWind also provides a suite of powerful marine weather tools to save you time and keep you safe at sea using Wind, Wave, Tidal and Ocean currents. Weather Routing takes your start and end points then calculates your route factoring in tides, currents, wind and wave data, depth and your Sailing Yacht or Powerboats unique dimensions to give you the best route for comfort or speed. Departure Planning quickly summarizes the forecast marine weather conditions you’ll encounter along your route if leaving on day 1, 2, 3, or 4. Use this data to select the perfect departure date, every time for your Sailing Yacht or Powerboat. ADDITIONAL FEATURES - Daily Briefing: Powerful marine weather data condensed into a simple text forecast. - Maps: High resolution forecasts maps with animated streamlines, wind barbs or arrows. - Tables: The ultimate dashboard for detailed analysis of Wind, Wave, Rain and more. - Graphs: Compare multiple marine forecasts at the same time. - Live Wind Observations and Webcams: Know what’s happening with the weather right now at your local spot. - Local Knowledge: Hear about the best marine spots, amenities and activities at your destination. - Weather Alerts: Set your preferences then get alerts when conditions are just the way you like them for Wind, wave and other parameters. - Ocean Data: See what’s happening under the waves with ocean and tidal currents, and sea temperature. - GPS Tracking: Get a free customized GPS tracking page for your blog or website showing wind data overlaid. - AIS Data: View over 280,000 vessels worldwide on the AIS network to see marine traffic. Terms and conditions: https://www.predictwind.com/about-us/terms-and-conditions Privacy policy: https://www.predictwind.com/about-us/privacy-policy
iWindsurf
Get hyper-local wind and weather forecasts for water sports. Access real-time data from proprietary weather stations and public sources, with advanced AI-enhanced predictions and customizable alerts.
- Proprietary Tempest Weather Systems
- AI-enhanced Nearcast forecasting
- Live wind and forecast maps
- Customizable wind alerts
- Tides and wave height data
- Apple Watch compatibility
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Whether you are wing foiling, wavesailing in breaking waves, or windsurfing the gnar on your local bay, river, or lake, you want and need the best possible forecasts and live wind reports… and iWindsurf has them! We have deployed over 90,000 proprietary Tempest Weather Systems, giving you real-time local weather right where you sail. With exclusive iWindsurf stations on near shore markers, buoys, piers, breakwaters, and key waterfront spots, we have a terrific number of local windsurfing areas covered. Our Tempest Rapid Refresh Model delivers the most accurate Nearcast predictions to our customers. We supplement our proprietary data with information from government agencies including: NOAA, NWS, and bring in reports sets including the AWOS, ASOS, METAR, and even CWOP. iWindsurf creates a complete view of the weather with radar, forecast maps, and customized alerting. Why you should download iWindsurf: - Coastal observations from proprietary Tempest Weather Systems along with all public domain marine forecasts and reports (NOAA, NWS, METAR, ASOS, CWOP) including all major airports creating over 125,000 unique stations. - Our exclusive Tempest Weather Systems deployed at coastal buildings, and at beaches, with haptic rain sensors, sonic anemometers, along with local barometric pressure sensors, provide ground truth observations. - Apple Watch compatibility - Live wind from our systems provides a better windy conditions flow map – augmented by current station reports with advanced quality control. - Our Proprietary AI-enhanced Nearcast provides enhanced forecasting for temperature, wind gust, speed, direction, humidity, dewpoint, precipitation rate, probability of precipitation, and cloud cover percentage. - Public domain forecast models including High Resolution Rapid Refresh (HRRR), North American Mesoscale Forecast System (NAM), Global Forecast System (GFS), Canadian Meteorological Centre Model (CMC), Icosahedral Non Hydrostatic Model (ICON). - Free subscription for unlimited wind alerts with customizable thresholds to email, text, or in-app. - Create your own Favorite station list to keep an eye on your go-to weather stations at your foiling, windsurfing, and surfing spots. - Maps - Live and Forecasted Wind, Temperature, Radar, Satellite, Precipitation and Clouds, as well as Nautical Charts. - National Weather Service (NWS) Marine Forecasts & Marine Warnings / Alerts - Also: - Tides charts - Wave height, wave period - Water temperature - Sunrise / sunset - Moonrise / moonset - Historical wind statistics - Wind direction distribution Want more weather? - Upgrade to Plus, Pro, or Gold membership to gain access to more weather stations and forecasts. - Access our exclusive ultra high-quality array of meteorologist-sited Pro stations at tip top coastal locations. - Unlock access to iWindsurf’s second-to-none meteorologist-written hyper-accurate Pro forecasts written daily for windsurfing hotspots coast-to-coast. - Detailed weather info, gusts, rain radar, satellite, NOAA, NWS, at spots of interest to coastal residents and property owners near the ocean, rivers, and other bodies of water. - On the water features - Sea surface temperatures - Sea surface currents - Detailed historical wind statistics - Historical wind speed average by year What else can you do? - Get a Tempest Weather System for your house, business, windsurf club, pier, or backyard. Support: https://help.weatherflow.com/hc/en-us/categories/200419268-Sailflow-iKitesurf-iWindsurf-FishWeather-WindAlert Connect: - https://facebook.com/tempestwx - https://twitter.com/tempest_wx - https://youtube.com/@tempestwx - https://instagram.com/tempest.earth Contact Tempest: https://help.weatherflow.com/hc/en-us/requests/new Website: https://tempest.earth By purchasing a subscription or downloading iWindsurf you agree that you have read and accept our Privacy Policy and Terms of Use. https://got.wf/privacy https://got.wf/terms
Screenshots
Verdict
The clearest difference is ratings volume: PredictWind at 33K against iWindsurf's 1.7K. PredictWind also leads on chart position (#21 vs #91). On price, rating, review sentiment and update cadence 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
Both are free to download. PredictWind sells 16 in-app purchases, starting at $6.99 per month and iWindsurf sells 10 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.8 for PredictWind against 4.8 for iWindsurf. That said, the two scores are not equally well evidenced: PredictWind has 33K ratings behind it against 1.7K, so its average is the more settled of the two. Written reviews are what separate them: 84% of PredictWind's written reviews are positive against 90% of iWindsurf's.
PredictWind ships an update every 11 days, iWindsurf every 3 weeks. The most recent releases landed on November 3, 2026 and November 1, 2026 respectively.
| Parameter | PredictWind | iWindsurf |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (33K ratings) — better | 4.8 (1.7K ratings) |
| Positive reviews | 84.4% of reviews | 89.6% of reviews — better |
| Number of ratings | 33K — better | 1.7K |
| Update frequency | Every 11 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #21 — better | #91 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 49 MB | 135 MB |
| Age rating | 4+ | 4+ |
| Developer | PredictWind Limited | WeatherFlow |
Customer experience
PredictWind
iWindsurf
User reviews
PredictWind
From 33K App Store ratingsWhat we love
- 👍 Accurate weather forecasts
- 🚀 Comprehensive data and features
- 💡 Useful for sailing, fishing, and other outdoor activities
- 👍 Easy to use and navigate
- 🚀 Reliable and dependable
Room to improve
- 🐛 Occasional inaccuracies in weather predictions
- 💰 Expensive subscription costs
- 🔒 Difficult to cancel subscription
- 🔒 Locked into using proprietary hardware and services
- 🔒 Limited free features
iWindsurf
From 1.7K App Store ratingsWhat we love
- 🚀 Accurate forecasts
- 👍 Easy to use
- 🔍 Detailed wind and weather data
- 💡 Helpful for planning wind sports activities
- 🔍 Reliable and dependable
Room to improve
- 🐛 Occasional bugs and crashes
- 🔍 Difficult to cancel paid subscription
- 🔍 Outdated or missing features in some versions
- 🔍 Slow or laggy performance on some devices
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
iWindsurf
Reported bugs
3 issues- Favorites list not displaying correctly
- Inconsistent wind data between different parts of the app
- Compatibility issues with newer iOS versions
Requested features
4 requests- Customizable user interface
- More detailed forecasts and historical data
- Apple Watch complications with real-time updates
- Improved location management and favorites functionality
In-app purchases
PredictWind
- Basic - Monthly7 Days trial$6.991 Month
- Basic - 3 Monthly$12.003 Months
- Basic - 3 Monthly7 Days trial$12.003 Months
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- Basic - Annual7 Days trial$29.001 Year
- 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
- Basic Subscription, 1 Month$3.99
- Basic Subscription, 3 Months$11.99
- Basic Subscription, 12 Months$28.99
Show 2 moreShow fewer
- Standard Subscription, 1 Month$48.99
- Professional Subscription, 1 Month$99.99
iWindsurf
- Plus$3.991 Month
- Plus7 Days trial$5.491 Month
- Gold$14.991 Month
Show 7 moreShow fewer
- Pro7 Days trial$14.991 Month
- Pro - Pay As You Go (auto-renewing)$19.991 Month
- Gold7 Days trial$21.991 Month
- Plus$44.991 Year
- Plus7 Days trial$44.991 Year
- Pro7 Days trial$119.991 Year
- Gold$179.991 Year
Questions
Is PredictWind free?
Is iWindsurf free?
Which has better reviews, PredictWind or iWindsurf?
Do PredictWind or iWindsurf have ads?
Which is updated more often, PredictWind or iWindsurf?
Which is more popular, PredictWind or iWindsurf?
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