Comparison

SailFlow vs Sea Level Rise

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
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

Sea Level Rise

Map and document local flooding impacts caused by sea level rise. Contribute street-level data through photo submissions and identify "Trouble" spots. Participate in crowd-sourcing events to help researchers and civic leaders understand and address flooding challenges.

Highlights
  • Map community flooding
  • Document sea level rise impacts
  • Contribute street-level data
  • Identify 'Trouble' spots
  • Capture and share photos
  • Participate in crowd-sourcing events
Features
Read full description

The Sea Level Rise app allows anyone to map the flooding in their community, helping document sea level rise and other flooding impacts. While virtually everyone in and around a low-lying coastal region is or will be affected by sea level rise, we started our work in Hampton Roads, Virginia and have learned from the mapping efforts of thousands of volunteers during annual "Catch the King Tide" events. Developed by Wetlands Watch, this app moves us in the direction of being a better informed and connected community so we can stay ahead of sea level rise. Access user-submitted information about this global phenomena and participate (as a volunteer) in capturing the street-level data we need to better understand and solve the challenges it brings! With the app, you can: • Participate in crowd-sourcing events to capture the localized data researchers and civic leaders require, but lack • Find and add nearby "Trouble" spots where high water affects your travel during times of inclement weather • Capture and share photos that document what's occurring in your community • Access specific collaboration spaces, called regions, where you can manage volunteers and schedule mapping events

Screenshots

SailFlow4 screens
Sea Level Rise4 screens

Verdict

The call

The clearest difference is review sentiment: SailFlow at 84% against Sea Level Rise's 20%. SailFlow also leads on rating (4.7 vs 3.4) and ratings volume (5.9K vs 12). Sea Level Rise's advantage is in-app purchases (none vs 10). On price, ads, device support and iOS requirement 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. Sea Level Rise asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SailFlow holds the better App Store score, 4.7 against 3.4. That said, the two scores are not equally well evidenced: SailFlow has 5.9K ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 84% of SailFlow's written reviews are positive against 20% of Sea Level Rise's.

UpkeepUpdate frequency

SailFlow ships an update every 3 weeks, Sea Level Rise every 6 weeks. Both last shipped on October 29, 2026.

Scorecard7 real differences · 4 level
SailFlow versus Sea Level Rise: the parameters behind the verdict, then further details
ParameterSailFlowSea Level Rise
PriceFreeFree
Rating4.7 (5.9K ratings) — better3.4 (12 ratings)
Positive reviews84.0% of reviews — better20.0% of reviews
Number of ratings5.9K — better12
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#40 — better—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size137 MB69 MB
Age rating4+4+
DeveloperWeatherFlowConcursive

Customer experience

SailFlow

All ratings5,827 ratings
Positive96.6%
Neutral1.8%
Negative1.7%
Written reviews363 reviews
Positive84.0%
Neutral4.1%
Negative11.8%

Sea Level Rise

All ratings12 ratings
Positive58.3%
Neutral0.0%
Negative41.7%
Written reviews5 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

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

Sea Level Rise

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

Sea Level Rise

No in-app purchases

Questions

Is SailFlow free?
SailFlow is free to download, with in-app purchases available.
Is Sea Level Rise free?
Sea Level Rise is free to download, with no in-app purchases.
Which has better reviews, SailFlow or Sea Level Rise?
SailFlow is rated higher. SailFlow averages 4.7 out of 5 from 5.9K ratings, while Sea Level Rise averages 3.4 from 12 ratings.
Do SailFlow or Sea Level Rise have ads?
Neither SailFlow nor Sea Level Rise shows ads.
Which is updated more often, SailFlow or Sea Level Rise?
SailFlow ships an update every 3 weeks, and Sea Level Rise every 6 weeks. Most recently, SailFlow was updated on October 29, 2026 and Sea Level Rise on October 29, 2026.

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