About SailTimer(TM)
Now for all types of boats. Whether you are going out in a cabin cruiser, sport fisher, sailboat, work boat, kayak or waterski boat, this app shows you an animation of wind and wave conditions before heading out on the...
Now for all types of boats. Whether you are going out in a cabin cruiser, sport fisher, sailboat, work boat, kayak or waterski boat, this app shows you an animation of wind and wave conditions before heading out on the water.
There are lots of weather services and apps, but they all use the same satellite weather forecast. 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. Why rely on satellite imaging, when you can use actual measurements from other boaters? 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.
FEATURES FOR ALL TYPES OF BOATS:
● View your route with free aerial photos and land maps worldwide. If you have the Navionics Boating app, you can import worldwide Navionics charts here with a yearly subscription. All maps and charts can be used offline.
● The crowdsourced wind map animation and WNI marine weather each have a low-cost monthly subscription with a free 7-day trial. (The animation needs more resources than other parts of the weather maps, and may not run on older versions of Android or phones/tablets with minimal RAM).
● Create and rename waypoints by tapping or importing a list.
● The white crosshair icon in the top left is the “Follow-Me” button. If clicked, it turns blue and keeps your location in the center of the screen as you move. Unselect when not moving to look around the map, and when to zoom in and out.
● 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 www.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™ (www.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 wind speed to see your optimal tacks for the route you are planning.
● Just select a route to see the optimal tacks to each waypoint.
● The optimal tacks are the same headings whether you do the port or the 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:
[email protected]
See our channel on Tiktok and YouTube Shorts for more background. Happy boating!
Previous Versions
Here you can find the changelog of SailTimer(TM) since it was posted on our website on 2020-11-02 21:50:41.
The latest version is 6.2.1 and it was updated on 2026-06-18 01:53:04. See below the changes in each version.
SailTimer(TM) version 6.2.1
Updated At: 2026-05-28
Changes: Beautiful weather animations with different types of marine weather:
• 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.
Correction to login for Navionics charts.
SailTimer(TM) version 6.2
Updated At: 2026-03-17
Changes: Beautiful weather animations with different types of marine weather:
• 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.
Also update to Android library used by Navionics charts.
SailTimer(TM) version 6.1.3
Updated At: 2025-12-24
Changes: Beautiful weather animations with different types of marine weather:
• 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 forecasts and marine weather from Amphitrite. Their AI models of ocean currents are trained on in-situ measurements and satellite imaging of sea temperature, altimetry & chlorophyl (plant plankton).
SailTimer(TM) version 6.0.1
Updated At: 2025-06-16
Changes: • Crowdsourced wind map animation - only from SailTimer.
• WNI marine weather used by thousands of ship captains every day.
• The yellow boat icon is corrected in this update to show your heading and location.
SailTimer(TM) version 6.0.0
Updated At: 2025-05-29
Changes: • Crowdsourced wind map animation - only from SailTimer.
• WNI marine weather used by thousands of ship captains every day.
SailTimer(TM) version 1.5.9
Updated At: 2024-12-26
Changes: Preliminary version of wind animation now included under Wind Zones button.
SailTimer(TM) version 1.5.7
Updated At: 2024-11-06
Changes: Use the new Wind Zones button to see contour lines showing where the wind changes up ahead. Based on both satellite weather forecasts and more accurate crowdourced wind measurements (live and archived wind flow maps).
SailTimer(TM) version 1.5.3
Updated At: 2023-01-30
Changes: • Added menu for water depths in feet, meters or fathoms on Navionics charts.
• You can now set waypoints and see your GPS track on Navionics charts.
• Small interface adjustment with Notice to Mariners.
SailTimer(TM) version 1.3.2
Updated At: 2022-02-25
Changes: . Updates to Navionics charts + improvements to interface for ease of use.
. You can now set waypoints and see your GPS track on Navionics charts.
. Navionics high-resolution SonarChart(TM) crowdsourced water depths.
SailTimer(TM) version 1.0.2
Updated At: 2019-11-25
Changes: This is a brand new app that we will continue to refine and improve. Our development team is working hard to make this the easiest and best app for sailboat navigation.
Disclaimer
Official Google Play Link
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