Comparison

SailFlow vs Windy Lookout

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

Head to head
About

SailFlow

Get hyper-accurate, real-time marine weather forecasts and live wind reports. This app uses proprietary weather systems and integrates public data for detailed wind, wave, tide, and radar information. Customize alerts and track your favorite sailing spots.

Highlights
  • Proprietary Tempest Weather Systems
  • Live wind and current station reports
  • AI-enhanced Nearcast forecasting
  • Radar, satellite, and precipitation maps
  • Tides charts and wave height
  • Customizable wind notifications
  • Nautical charts
Features
Currently charting
Read full description

Whether you’re racing, cruising, day sailing, you need precise sailing forecasts and real-time wind. SailFlow delivers both. Powered by 90,000+ exclusive Tempest Weather Stations and 150,000+ total sources, SailFlow’s weather and wind app delivers unmatched accuracy. With stations on buoys, piers, and key waterfront locations, you get real conditions exactly where you sail. Plan with confidence using our Tempest Rapid Refresh Model combined with government data to deliver industry-leading Nearcast AI predictions. Then go deeper with radar, high-resolution forecast maps, and fully customizable alerts so you never miss a session. Real wind. Better sails. - 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 150,000 unique stations. - Exclusive Tempest Weather Systems deployed at key coastal locations report wind, rain, barometric pressure and more than 24 other weather observations. - Apple Watch compatibility - Live wind from our stations support powerful wind flow visualization – 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 which is perfect for sailing. - 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) and Icosahedral Non Hydrostatic Model (ICON). - Create your own favorite station list to keep an eye on your go-to weather stations at all your marine and sailing spots. Check the tides in minutes so you never miss a day on the water. - Maps: Live and Forecasted Wind Map, Forecasted Temperature, Radar, Satellite, Precipitation and Clouds, as well as Nautical Charts. - Free subscription for unlimited wind notifications/alerts with customizable thresholds to email, text, or in-app. - Monitor National Weather Service (NWS) Marine forecasts, high surf warnings, and other to better anticipate waves and current conditions, for safer, more informed decisions on the water. Additional weather parameters: - Tides charts - Wave height, wave period - Water temperature - Sunrise / sunset - Moonrise / moonset - Historical wind statistics - Windy days per month - Wind direction distribution Go Beyond the Basics: Upgrade to Plus, Pro, or Gold membership to gain access to more weather stations, ad-free browsing, and more. - Access exclusive Pro and hurricane-proof stations at premier coastal locations and unlock SailFlow’s hyper-accurate Pro forecasts, updated daily by expert meteorologists for sailing hotspots coast to coast. - Detailed weather at points 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 Does your spot need a station? Join the Tempest Weather Network! Get a Tempest Weather System for your club, dock, or backyard. Get support: help.weatherflow.com/hc/en-us/categories/200419268-iKitesurf-iWindsurf-SailFlow-FishWeather-WindAlert Connect with Tempest: - facebook.com/tempestwx - twitter.com/tempest_wx - youtube.com/@tempestwx - instagram.com/tempest.earth Contact Tempest: help.weatherflow.com/hc/en-us/requests/new Website: tempest.earth By purchasing a subscription or downloading SailFlow you agree that you have read and accept our Privacy Policy and Terms of Use. got.wf/privacy got.wf/terms

About

Windy Lookout

This app provides early warnings for sudden, dangerous weather changes, particularly high winds on lakes. It analyzes real-time wind conditions beyond the immediate area to alert users minutes before they occur, enhancing safety for lake recreational activities.

Highlights
  • Early weather change detection
  • Real-time wind analysis
  • Sudden wind alerts
  • Lake safety enhancement
  • Forecasted wind conditions
Features
Read full description

Windy Lookout's main function is to work as an early alert system for lake recreational users. Its purpose and goal is 3 fold: Detection, Alert and Safety. Current weather conditions and forecasts are readily available through many free services. As many lake recreational users will tell you, the problem arises when unpredictable sudden weather changes happen on the lake. For the sailing community, it is especially important to beware of potentially dangerous high wind speeds. Not only will these create rough conditions on the lake but if you are caught unprepared, the winds can knock down sailboats. Windy Lookout analyzes and processes many current wind conditions beyond the perimeter of the lake to give users an early alert should a dangerous wind arise. We process this information in real-time to give users an alert allowing them to make the necessary decisions to stay safe in the minutes before the wind hits.

Screenshots

SailFlow4 screens
Windy Lookout4 screens

Verdict

The call

The clearest difference is ratings volume: SailFlow at 5.8K against Windy Lookout's 15. SailFlow also leads on rating (4.7 vs 4.5) and chart position (#33 vs unranked). On price, review sentiment, update cadence 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. SailFlow sells 10 in-app purchases, starting at $3.99 per month and Windy Lookout sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

SailFlow holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: SailFlow has 5.8K ratings behind it against 15, so its average is the more settled of the two. Written reviews complicate that: 84% of SailFlow's written reviews are positive against 89% of Windy Lookout's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

SailFlow ships an update every 3 weeks, Windy Lookout every 4 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 8 level
SailFlow versus Windy Lookout: the parameters behind the verdict, then further details
ParameterSailFlowWindy Lookout
PriceFreeFree
Rating4.7 (5.8K ratings) — better4.5 (15 ratings)
Positive reviews84.2% of reviews88.9% of reviews — better
Number of ratings5.8K — better15
Update frequencyEvery 3 weeks — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#33 — better—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.014.5 — better
Further details — not scored
Size137 MB4 MB
Age rating4+4+
DeveloperWeatherFlowSean Thornton

Customer experience

SailFlow

All ratings5,827 ratings
Positive96.6%
Neutral1.8%
Negative1.7%
Written reviews360 reviews
Positive84.2%
Neutral4.2%
Negative11.7%

Windy Lookout

All ratings16 ratings
Positive87.5%
Neutral6.3%
Negative6.3%
Written reviews9 reviews
Positive88.9%
Neutral11.1%
Negative0.0%

Bugs and requests

SailFlow

Reported bugs

3 issues
  • Recent update caused app to crash
  • Favorites list not working properly
  • Wind direction arrow pointing incorrectly

Requested features

5 requests
  • Add more local weather stations
  • Improve map and location search
  • Provide more forecast models
  • Add support for Apple Watch
  • Fix wind direction arrow issue

Windy Lookout

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

SailFlow

Subscriptions10
  • Plus$3.991 Month
  • Plus7 Days trial$5.491 Month
  • Gold$14.991 Month
Show 7 more
  • 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
2 purchases

Windy Lookout

One-time2
  • 1 Year Mobile Alerts$9.99
  • 1 Year Text Alerts$19.99

Questions

Is SailFlow free?
SailFlow is free to download, with in-app purchases available.
Is Windy Lookout free?
Windy Lookout is free to download, with in-app purchases available.
Which has better reviews, SailFlow or Windy Lookout?
SailFlow is rated higher. SailFlow averages 4.7 out of 5 from 5.8K ratings, while Windy Lookout averages 4.5 from 15 ratings.
Do SailFlow or Windy Lookout have ads?
Neither SailFlow nor Windy Lookout shows ads.
Which is updated more often, SailFlow or Windy Lookout?
SailFlow ships an update every 3 weeks, and Windy Lookout every 4 weeks. Most recently, SailFlow was updated on October 26, 2026 and Windy Lookout on October 24, 2026.

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