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A marine weather and chartplotter app for all boaters.
AppBrain's verdict
EstablishedWell rated- Rating on Google Play
- 4.18
- 487 ratings
- Installs
- 100 thousand
- Last updated
- October 26, 2026
- Ads
- No ads
- Size
- 44.9 MB
SailTimer™ has 100 thousand installs. Users rate it well: 4.2 stars from 487 ratings.
User feedback
Ratings and reviews on Google PlayComments on SailTimer™ for Android
Google Play Rating history and histogram
Store listing
By SailTimer Inc., from Google PlayDescription by SailTimer Inc. Written by the developer, not by AppBrain. Click to read.
• Crowdsourced wind maps for the most accuracy and highest resolution.
• Marine weather forecasts from Weathernews Inc. (WNI) with maps of precipitation, visibility, air & sea temperature, wind, waves/swell & ocean currents.
• AI models of ocean currents and marine weather from Amphitrite.
There are lots of weather services and apps, but they all use the same GRIB satellite weather forecasts. Low resolution, low accuracy, and only updated 4 times per day. Weather satellites are 500 to 22,000 miles up in space. Crowdsourcing is changing marine weather. In coastal areas, we archive these to map wind flow for more accuracy.
Crowdsourced weather maps like these have never been possible before. A wind sensor measures local wind around your boat, but now you can also know the wind and sea state up ahead or around the next point.
Discount Bundle: Get our Ultrasonic wind sensor with a free Air Link™. Amazing value! https://wi-rb.com/product/discount-bundle/
FEATURES FOR ALL TYPES OF BOATS:
● View your route with free aerial photos and land maps worldwide. Import worldwide Navionics charts with a yearly subscription. All maps and charts can be used offline.
● Hourly weather tables for crowdsourced wind and WeatherNews Inc. (WNI) weather maps. Tap on a certain hour to move the whole weather animation to that time.
● The weather animations have a low-cost monthly subscription with a free 7-day trial.
● Create waypoints by tapping or importing a list.
● Crosshair icon in the top left is the “Follow-Me” button. If tapped, it turns blue and keeps your location in the center of the screen. Unselect to look around the map.
● GPS track can be displayed under options. Save a screenshot to view or share your trip later.
FOR SAILBOATS:
Whether cruising or racing, it is important to be able to determine the best heading on all points of sail. GPS chartplotters and mapping apps do not account for sailboat tacking distances. But if they do not know the distance you will travel, how can they calculate your correct ETA? This is the only product that calculates your optimal tacks using your tacking distance and polar plots. Details at SailTimerApp.com. SailTimer gives you a quick and easy display of your optimal tacks and TTD® (Tacking Time to Destination).
● If you have the wireless SailTimer Wind Instrument™ (SailTimerWind.com) connected to your phone/tablet, your optimal tacks will update automatically in this app as the wind changes. Or you can manually enter wind direction and speed to see your optimal tacks for the route you are planning.
● Just select a route to see the optimal tacks to each waypoint.
● When you pass a waypoint, press the > on the right side of the screen to go to the next waypoint. (Press < on the left side to see optimal tacks to the previous waypoint).
● The optimal tacks are the same headings whether you do the port or starboard tack first. See the FAQs at http://sailtimerapp.com/FAQ.html for hints about avoiding obstructions by switching to the other tack.
● Polar plots: The app comes with a default polar plot for calculating optimal tacks (which you can edit). Plus, it can learn the custom profile for your boat's speed on different wind angles (polar plot).
● Wind gauge button in upper right when using wireless Wind Instrument shows True and Apparent Wind Angle and Direction (TWD, TWA, AWD, AWA) in True-North and Magnetic-North reference.
● Audio feedback is available by tapping screen to hear wind conditions. (More audio features are available in the SailTimer Wind Gauge app).
License Agreement: https://www.sailtimerapp.com/LicenseAgreement_Android.pdf
Navionics privacy policy and terms of use: http://www.sailtimerapp.com/VectorCharts.html.
For any questions, SailTimer Tech Support is prompt and helpful: info@SailTimer.co
See our channel on Tiktok and YouTube for more background. Happy boating!
Recent changes:
• Weather routes: You can now display your waypoints/route with a weather map animation overlaid on Navionics charts.
• Wind maps: tap a location on the animation for details from the low-res GRIB satellite forecast (white) and hi-res crowdsourced wind measurements (purple). It is fun -- look for the green dotted line and target.
Safety and technology
Found in the app by AppBrain- Ads
- No ads
- Price
- Free
- Libraries
- 19
- App size
- 44.9 MB
- Needs Android
- 8.0+
- Content rating
- Everyone
Technologies used by SailTimer™
Releases
Updates seen on Google Play- Version
- 7.0
- Launched
- November 2019
- Oct 26, 2026UpdateVersion 7.0
- Sep 16, 2026UpdateVersion 7.0
- Aug 20, 2026UpdateVersion 6.3.3
- Aug 8, 2026UpdateVersion 6.3.2
- Jul 24, 2026UpdateVersion 6.2.3
Alternatives
Similar apps and more from SailTimer Inc.Alternatives to SailTimer™
More from SailTimer Inc.
Installs
Tracked by AppBrain- Last 30 days
- 2 thousand
- Per day
- 66
- 30-day average
- Play install range
- 100+ thousand
- Launched
- November 2019
Installs over time
SailTimer™ has been installed 100 thousand times. Over the past 30 days, it averaged 66 installs per day.
Rankings
Google Play top chartsGoogle Play Rankings for SailTimer™
About the app and developer
About SailTimer™
SailTimer™ is a maps & navigation app developed by SailTimer Inc.
Install Statistics
SailTimer™ has been installed 100 thousand times. In the last 30 days, the app was installed 2 thousand times.
User Ratings
SailTimer™ is rated 4.18 out of 5 stars. The rating is based on 490 ratings.
App Information
SailTimer™ is freely available from Google Play. The app size is 44.89 MB. The latest version available is 7.0. The last update was on October 26, 2026.
Technical Requirements
SailTimer™ requires Android 8.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since November 2019.
SailTimer™ is made and published by SailTimer Inc. AppBrain is an independent app data site and isn't affiliated with SailTimer Inc. The app name, icon, screenshots and description belong to SailTimer Inc. and are shown as published on Google Play.
App Performance Report
Get a detailed PDF report for SailTimer™ with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more
Get PDF Report — $29Developer information for SailTimer Inc.
Frequently asked questions about SailTimer™
Is SailTimer™ free?
Yes. SailTimer™ is free on Google Play.
Is SailTimer™ still available?
Yes. SailTimer™ is on Google Play, and the last update we saw was on October 26, 2026.
Does SailTimer™ contain ads?
No. Google Play does not list SailTimer™ as containing ads.
What Android version does SailTimer™ require?
SailTimer™ runs on Android 8.0 and higher.
How large is SailTimer™?
SailTimer™ is 44.89 MB.
Is SailTimer™ suitable for children?
Google Play rates the content of SailTimer™ as suitable for everyone.
How many times has SailTimer™ been installed?
Google Play lists 100,000+ installs for SailTimer™.
How do people rate SailTimer™?
SailTimer™ scores 4.18 out of 5 stars, from 487 ratings on Google Play.
Who made SailTimer™?
SailTimer™ was developed by SailTimer Inc. It is listed in the maps & navigation category on Google Play.
What are the best alternatives to SailTimer™?
People looking at SailTimer™ also look at these maps & navigation apps: PredictWind - Marine Forecasts, SeaLegs AI: Marine Forecasts, TideWise: NOAA Tides & Weather, Weather: Live Forecast & Radar, PredictWind Offshore Weather.
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