Comparison

SailFlow vs SailWindow

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

SailWindow

This app provides sailors with a focused marine weather view, combining forecast conditions, alerts, and buoy observations. It helps users quickly assess if conditions are good, questionable, or unsafe for sailing.

Highlights
  • Sailing window summary (Good, Caution, No-Go)
  • NOAA marine forecast text
  • Wind, wave, and temperature charts
  • Active marine and weather alerts
  • Nearby buoy observations
  • Saved sailing locations
  • Local notification rules
Currently charting
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SailWindow helps sailors quickly understand whether the next few hours look good, questionable, or unsafe on the water. Choose a sailing location and get a focused marine weather view built from NOAA, NWS, and NDBC data. SailWindow combines forecast conditions, active marine alerts, nearby buoy observations, and NOAA marine text forecasts into a clear summary for planning your time on the water. Features include: • Sailing window summary with Good, Caution, and No-Go conditions • NOAA marine forecast text matched automatically to your selected location • Wind, gust, wave height, wave period, wave direction, temperature, rain, and thunder risk charts when available • Active marine and weather alerts • Nearby NOAA/NDBC station and buoy observations • Station map with selectable buoy markers • Saved sailing locations • Local notification rules for changing conditions SailWindow is designed for pre-sail planning and situational awareness. Weather and marine conditions can change quickly. Always check official sources, local conditions, and required safety equipment before going out.

Screenshots

SailFlow4 screens
SailWindow4 screens

Verdict

The call

The clearest difference is price: SailFlow at Free against SailWindow's $0.99. SailFlow also leads on ratings volume (5.8K vs 2) and device support (4 vs 1). SailWindow's advantage is in-app purchases (none vs 10) and rating (5.0 vs 4.7). On ads and chart position 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

SailFlow is free to download; SailWindow costs $0.99 up front. SailFlow sells 10 in-app purchases, starting at $3.99 per month. SailWindow asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SailWindow holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: SailFlow has 5.8K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

SailFlow ships an update every 3 weeks, SailWindow every 5 days. The most recent releases landed on October 14, 2026 and September 26, 2026 respectively.

Scorecard8 real differences · 3 level
SailFlow versus SailWindow: the parameters behind the verdict, then further details
ParameterSailFlowSailWindow
PriceFree — better$0.99
Rating4.7 (5.8K ratings)5.0 (2 ratings) — better
Positive reviews84.1% of reviews—
Number of ratings5.8K — better2
Update frequencyEvery 3 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#35 — better#84
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS15.0 — better18.0
Further details — not scored
Size137 MB3 MB
Age rating4+4+
DeveloperWeatherFlowDIMITRY BRAZNICHENKO

Customer experience

SailFlow

All ratings5,827 ratings
Positive96.6%
Neutral1.8%
Negative1.7%
Written reviews359 reviews
Positive84.1%
Neutral4.2%
Negative11.7%

SailWindow

All ratings2 ratings
Positive100.0%
Neutral0.0%
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

SailWindow

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
None

SailWindow

No in-app purchases

Questions

Is SailFlow free?
SailFlow is free to download, with in-app purchases available.
Is SailWindow free?
SailWindow costs $0.99, with no in-app purchases.
Which has better reviews, SailFlow or SailWindow?
SailWindow is rated higher. SailFlow averages 4.7 out of 5 from 5.8K ratings, while SailWindow averages 5.0 from 2 ratings.
Do SailFlow or SailWindow have ads?
Neither SailFlow nor SailWindow shows ads.
Which is updated more often, SailFlow or SailWindow?
SailFlow ships an update every 3 weeks, and SailWindow every 5 days. Most recently, SailFlow was updated on October 14, 2026 and SailWindow on September 26, 2026.
Which is more popular, SailFlow or SailWindow?
SailFlow currently peaks at #35 in the App Store charts, and SailWindow at #84. Chart position reflects recent download velocity rather than total install base.

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