Comparison

SailFlow vs Squid

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

Squid

This marine navigation app provides professional-grade weather forecasts and smart routing tools for sailors. It offers multi-model GRIB data, meteograms, and an extensive polar database, optimized for offshore and low-bandwidth use.

Highlights
  • Smart routing engine with roadbook
  • Cloud routing with multi-route comparison
  • Multi-model GRIB viewer
  • Forecasts up to 10 days
  • Meteograms for multi-model comparison
  • Extensive polar database
  • Lightweight GRIBs for offline use
Features
Read full description

The weather routing app trusted by the world's top offshore sailors. Squid is the mobile version of SquidX — the routing solution used by elite teams in the Vendée Globe, Route du Rhum, Transat Jacques Vabre, The Ocean Race, and more. Now that same professional-grade power is in your pocket. From solo ocean racers to weekend cruisers, Squid gives every sailor access to accurate multi-model weather data and smart routing tools — rebuilt for speed, simplicity, and offshore use. A brand-new version has just launched: completely redesigned interface, major performance upgrades, and new features continuously in development. Key Features • Smart routing engine with roadbook tool • Cloud routing with multi-route comparison • Multi-model GRIB viewer: GFS, ECMWF, AROME, ARPEGE, GEM, NAM and more • Forecasts up to 10 days, 1–3 hour time steps • Meteograms for multi-model comparison (wind & pressure) • Extensive polar database (racing & cruising yachts) • Lightweight GRIBs optimized for offline use • Iridium GO!® compatible — built for low-bandwidth environments • Custom map visualizations: isolines, wind barbs, arrows, particles Weather Coverage Wind, gusts, MSLP, rainfall, cloud cover, CAPE, humidity, temperature, surface currents, swell & wind waves. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

SailFlow4 screens
Squid4 screens

Verdict

The call

SailFlow and Squid both sit at 4.7 stars, but that hides the real split: 84% of SailFlow's written reviews are positive against 38% of Squid's. SailFlow also leads on ratings volume (5.8K vs 55) and chart position (#41 vs unranked). On price, rating, 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 Squid sells 8 in-app purchases, starting at $5.99 per 7 days. 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 — 4.7 for SailFlow against 4.8 for Squid. That said, the two scores are not equally well evidenced: SailFlow has 5.8K ratings behind it against 55, so its average is the more settled of the two. Written reviews are what separate them: 84% of SailFlow's written reviews are positive against 38% of Squid's.

UpkeepUpdate frequency

SailFlow ships an update every 3 weeks, Squid monthly. The most recent releases landed on October 22, 2026 and October 20, 2026 respectively.

Scorecard4 real differences · 7 level
SailFlow versus Squid: the parameters behind the verdict, then further details
ParameterSailFlowSquid
PriceFreeFree
Rating4.7 (5.8K ratings)4.8 (55 ratings) — better
Positive reviews84.2% of reviews — better38.4% of reviews
Number of ratings5.8K — better55
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#41 — better—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.0 — better16.4
Further details — not scored
Size137 MB253 MB
Age rating4+4+
DeveloperWeatherFlowDICE-ENGINEERING

Customer experience

SailFlow

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

Squid

All ratings55 ratings
Positive94.5%
Neutral3.6%
Negative1.8%
Written reviews73 reviews
Positive38.4%
Neutral6.8%
Negative54.8%

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

Squid

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
8 purchases

Squid

Subscriptions8
  • HIRES Europe 1 Week$5.997 Days
  • HIRES USA 1 Week$6.997 Days
  • HIRES Europe 1 Month$9.991 Month
Show 5 more
  • HIRES USA 1 Month$9.991 Month
  • HIRES Europe 3 Months$18.993 Months
  • HIRES USA 3 Months$18.993 Months
  • HIRES Europe 1 Year$33.991 Year
  • HIRES USA 1 Year$33.991 Year

Questions

Is SailFlow free?
SailFlow is free to download, with in-app purchases available.
Is Squid free?
Squid is free to download, with in-app purchases available.
Which has better reviews, SailFlow or Squid?
Squid is rated higher. SailFlow averages 4.7 out of 5 from 5.8K ratings, while Squid averages 4.8 from 55 ratings.
Do SailFlow or Squid have ads?
Neither SailFlow nor Squid shows ads.
Which is updated more often, SailFlow or Squid?
SailFlow ships an update every 3 weeks, and Squid monthly. Most recently, SailFlow was updated on October 22, 2026 and Squid on October 20, 2026.

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