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APP STORE

iWindsurf: Weather and Waves

WeatherFlow · Weather · Japan store
NOT IN TOP 100 HERE
View on App Store ↗ Instagram card Google Play version →
Revenue a month, worldwide
Too small to estimate
Not enough chart or ratings data
New ratings
+3
in 4 days, 1.9K in total
Rating
4.8 of 5
5 ratings in this store
Countries it ranks in
3
was 3 on Oct 19, 2026

Revenue

Estimated from the grossing charts of Oct 26, 2026 in the 53 countries we track, and ratings growth on the App Store.

EST. REVENUE / MONTH · WORLDWIDE
Too small to estimate
It only ranks in small categories, where no app reaches the overall top 100, so there is no reliable figure. Under about $3.7M a month (estimate), usually far less.
EST. LIFETIME DOWNLOADS
175 to 500
Estimated from ratings count
RATINGS
5
AVG RATING
4.80
PRICE
無料
AGE
14.1y
LAST UPDATE
10d ago
VERSION
7.14
SIZE
135 MB
AGE RATING
4+

Last 30 days

From our daily snapshots of every grossing chart and daily ratings counts.

DAYS IN A GROSSING CHART
30 / 30
COUNTRIES NOW
3 (was 3)
NEW RATINGS, LAST 4 DAYS
+3
EST. REVENUE A MONTH, DAILY · BOTH STORES EST
Show daily values
Sep 27, 2026not in a grossing chart
Sep 28, 2026not in a grossing chart
Sep 29, 2026not in a grossing chart
Sep 30, 2026not in a grossing chart
Oct 1, 2026not in a grossing chart
Oct 2, 2026not in a grossing chart
Oct 3, 2026not in a grossing chart
Oct 4, 2026not in a grossing chart
Oct 5, 2026not in a grossing chart
Oct 6, 2026not in a grossing chart
Oct 7, 2026not in a grossing chart
Oct 8, 2026not in a grossing chart
Oct 9, 2026not in a grossing chart
Oct 10, 2026$1.8K a month
Oct 11, 2026not in a grossing chart
Oct 12, 2026not in a grossing chart
Oct 13, 2026not in a grossing chart
Oct 14, 2026not in a grossing chart
Oct 15, 2026not in a grossing chart
Oct 16, 2026not in a grossing chart
Oct 17, 2026not in a grossing chart
Oct 18, 2026not in a grossing chart
Oct 19, 2026not in a grossing chart
Oct 20, 2026not in a grossing chart
Oct 21, 2026not in a grossing chart
Oct 22, 2026not in a grossing chart
Oct 23, 2026not in a grossing chart
Oct 24, 2026not in a grossing chart
Oct 25, 2026$794 a month
Oct 26, 2026not in a grossing chart
The same estimate as the headline, saved every day. Best rank Sep 27, 2026: #17 Weather · FR. Now: #59 Weather · IT.
RATINGS IN THE CORE COUNTRIES, DAILY
Show daily values
Oct 22, 20261.8K ratings
Oct 23, 20261.8K ratings
Oct 24, 20261.8K ratings
Oct 25, 20261.9K ratings
Oct 26, 20261.9K ratings
1.8K on Oct 22, 2026, 1.9K on Oct 26, 2026. New ratings track new downloads, even outside the charts.

Money and momentum

Measured from the store, not estimated.

WHAT IT CHARGES
No in-app purchases
Earns from its upfront price, ads or payments outside the store.
REVIEW MOMENTUM
0.4 reviews / week
  • Trendrising
  • Recent reviews average4.4 stars
  • Recent 1 and 2 star share10%
From the latest 100 written reviews, covering 1738 days. The store only returns this many, so this is the most recent slice.
RELEASE CADENCE
5 updates in 90 days
  • Typical gap between releases21 days
From the last 25 versions listed on the App Store.
RATING BREAKDOWN
5 ratings
5★80%
4★20%
3★0%
2★0%
1★0%

What users want

From the latest 100 reviews on the Japan App Store, Jan 22, 2022 to Aug 27, 2026: 10% are 1 or 2 stars. Open a theme to read what people wrote.

WHAT THEY COMPLAIN ABOUT · SHARE OF BAD REVIEWS
Price and subscription40%

4 of the 1 and 2 star reviews.

★★★★★ I am about to give up my paid subscription.
★★★★★ Don't waste your money it's wrong more often on its wind forecast than its right.
★★★★★ No one has contacted me and Apple will not refund charge!!!!
Bugs, things not working30%

3 of the 1 and 2 star reviews.

★★★★★ Favorites won't show up if you sort by avg wind speed. Change to alphabetical or rank and they show up. It worked yesterday by avg speed but not today. This is not the first time this has occurred.
★★★★★ This app, while it has been around a LONG time is still not really ready for prime time on an iPad. It works OK on the phone but causes the app to crash on the iPad and think I live in China (Massachusetts) when using…
★★★★★ Horrible, lots of bugs, set up and use difficult, problems have existed for many years.
WHAT THEY ASK FOR
  • But I wish the forecast would indicate the date and time that they're posted. 3★, Jun 24, 2026
  • It would be great if the widget updated more frequently or synchronized with the latest conditions, so I could just glance at the watch and see the actual current conditions. 4★, Mar 25, 2025
WORDS THAT KEEP COMING UP IN BAD REVIEWS

Nothing stands out.

WHAT THEY LOVE · SHARE OF GOOD REVIEWS
Accurate, great results23%

20 of the 4 and 5 star reviews.

★★★★★ I love iWindsurf it is the most accurate wind app out there …
★★★★★ relying on up to date accurate forecasts !
★★★★★ Seems more accurate than other apps.
Useful, it helps14%

12 of the 4 and 5 star reviews.

★★★★★ Good app, very helpful for predicting windswell for surfing the Great Lakes.
★★★★★ The site details used to be handy and useful, now we have a “graph” tab which shows the same details as in the Report, so you have to skip a tab and continue to forecast etc
★★★★★ It was useful even if it had lag…
Easy to use6%

5 of the 4 and 5 star reviews.

★★★★★ Outstanding features and easy to use.
★★★★★ Great balance of subscription non-subscription content. I like the different models.
★★★★★ Please go back to making it easy for the user to quickly get the updated reading for a specific site.
Worth the money6%

5 of the 4 and 5 star reviews.

★★★★★ But the free version is still helpful in these spots and in second-rate spots where there is no pro forecast.
★★★★★ That would free up more space inside the circle to display the wind speed in a larger font so that it's actually legible.
★★★★★ Not cheap, but definitely worth the money!
Great support3%

3 of the 4 and 5 star reviews.

★★★★★ I am probably going to cancel my subscription, as much as I wanted to support the app.
★★★★★ What happened to the Apple Watch complication? It was useful even if it had lag…
★★★★★ Support is fast and complete.

Found by matching words and phrases in the reviews, not read by a person. A review can count toward more than one theme.

What users say

Latest reviews, Japan App Store.

★★★★★Aug 27, 2026
Great app improved lately

It’s working well with a lot of recent fixes. Love the Apple Watch integration where you can view the wind on your watch face. One thing though. An app called iWindsurf should not have wingers on the splash screen!

★★★★★Aug 12, 2026
My go to source for wind updates and forecasts.

Read in the morning, same in the evening. Peruse throughout the day.

★★★★★Jul 21, 2026
Great for planning fishing trips offshore

Excellent application

★★★★★Jul 9, 2026
Amazing app - very accurate

I love iWindsurf it is the most accurate wind app out there …

★★★★★Jun 28, 2026
Wind Forecasts

They no longer show. Just a blank topo map. If you toggle around between models you can get something to show but sometimes it is by the hour, sometimes every 4 hours. Come on guys! Used to be great. Now just an exercise in frustration. I am about to give up my paid subscription.

★★★★★Jun 24, 2026
Session saver

Ive been running my school since 2003 using I windsurf and I kitesurf as go to source. Successful sessions are planned; some are spontaneous... relying on up to date accurate forecasts ! Thank you guys for all you do to maximize information availability !! Laurel Kaiser Island Style Watersports

Store screenshots

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App Store ads

Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.

No App Store ads in the EU
None in the last 90 days.

Apple only publishes ads shown in the EU (EU Digital Services Act), with a 7 day delay. An app that advertises only outside the EU shows nothing here.

Growth research

Where this app is buying and earning its users. Each link opens pre filtered.

ASO keywords

Most repeated terms in the listing. Highlighted ones also appear in the title.

weather11wind9tempest9iwindsurf7tempest weather6forecasts5stations5weather systems5noaa nws5historical wind5windsurfing4local4reports4proprietary4systems4including4nws4forecast4coastal4live wind3proprietary tempest3rapid refresh3public domain3marine forecasts3

What's new in 7.14

Optimized for iOS 27 and the new iPhone Duo. New split-screen views on Duo and iPad let you browse lists and maps alongside a location’s full weather report. Available in Wind List, Pro Forecasts, Favorites, and Maps.

Released Oct 10, 2012. Current version shipped Oct 16, 2026.

Store description

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

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