About SailTimer™
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. . The crowdsourced wind map animation has a low-cost monthly subscription with a free 7-day trial. Or get the whole year for about half price. . WNI marine weather is used by thousands of ship captains every day. See maps of waves and swell here, and on-going features that we will be continuing to add. Free 7-day trial. . Create and rename waypoints by tapping or importing a list. Save, import or email your GPS track. . Marine charts (raster) based on the paper charts are also available as low-cost in-app purchases for USA, US Virgin Islands, Puerto Rico, large-scale charts of The Bahamas and Cuba, and New Zealand. . All maps and charts in the app can be used offline. . The white 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 as you move. Unselect when not moving to look around the map. . Your device will not go to sleep when the app is open, to allow you to continue to monitor your progress on the chart. You can also continue to track your movement with the app running in the background or when the device is asleep (unless you hard-quit). (Note: Animation needs more resources than other parts of the weather maps, and may only appear on iOS 16 and later. Continued use of GPS running in the background can dramatically decrease battery life. This app may use your location even when it isn’t open, which can decrease device battery life.) FOR SAILBOATS: Whether cruising or racing, it is important to be able to determine the best heading on all points of sail. GPS chartplotters do not calculate 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(R) (Tacking Time to Destination). . Use our wireless Wind Instrument or wired Ultrasonic (www.SailTimer.co) to see wind direction, angle & speed. Enter a waypoint and your optimal tacks will update automatically as the wind changes. . Bring in wind data from any other wind sensor on wifi from NMEA 2000 or 0183, using our low-cost Air Link(TM) (https://wi-rb.com/airlink). . Custom polar plots: When using a wind sensor, the app can learn your sailboat's unique speed profile on all points of sail, for the most accurate tacking results. . Switch the display to the port or starboard tack to avoid obstructions, or let the app automatically display the tack nearest to your current heading. . Audio Navigation: when using the wireless Wind Instrument, optionally hear wind conditions or boat speed when they change by more than a set amount. . Convert from Apparent to True wind direction, angle & speed. See our channel on Tiktok and YouTube Shorts for more background.
Previous Versions
Here you can find the changelog of SailTimer™ since it was posted on our website on 2016-10-03 20:30:11.
The latest version is 6.2 and it was updated on 2026-06-23 09:37:34. See below the changes in each version.
SailTimer™ version 6.2
Updated At: 2026-06-02
Changes: Version History 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). 6.2 12/23/2025 • Crowdsourced wind map animation - only from SailTimer.
• WNI marine weather used by thousands of ship captains every day.
• Rotation is locked in the orientation the app opens in.
• Correction to wind speedometer on smaller iPhone displays. 6.0.4 08/01/2025 • Crowdsourced wind map animation - only from SailTimer.
• WNI marine weather used by thousands of ship captains every day.
• Rotation locked in the orientation the app opens in.
• Other interface improvements. 6.0.2 06/08/2025 • Crowdsourced wind map animation - only from SailTimer.
• WNI marine weather used by thousands of ship captains every day. 6.0.0 05/21/2025 Navionics marine charts, aerial photos and land maps are all available in the app. All now support creating and viewing waypoints, routes and GPS tracks. 5.9.5 03/22/2024 • New button for wireless Wind Instrument.
• Polar plot learning is now free (the boat's performance profile in all wind angles and wind speeds). The app can use this to calculate your unique boat's optimal tacks more accurately (but does come with a default polar plot). 5.9.4 02/11/2023 • Preparations for weather routing, to display your optimal tacks (a) if you use the wireless SailTimer Wind Instrument with your iPad/iPhone, and (b) in future through crowdsourced wind zones up ahead.
• This app is now free! It now consolidates the SailTimer CE app, to make one SailTimer tacking app for simplicity.
• Polar Plot Learning is also now free. Generate a custom Polar Plot for your unique sailboat (the boat's performance profile in all wind angles and wind speeds). The app can use this to calculate your optimal tacks more accurately.
• Bug fixes for chart & map displays. 5.9.3 12/10/2022 • Polar plots updated for recent versions of iOS, so you can export polars to edit them, then re-import.
• Fixed bug with in-app purchase buttons. 5.9.2 07/27/2022 • The optimal tacks to the next waypoint are now automated. When you open the app, your list of waypoints/routes is shown. Just tap one and your optimal tacks are automatically displayed. If you have the wireless Wind Instrument, the wireless connection is also already turned on in InputSet-Up.
• Bug fixed for exporting a polar plot to edit and re-import it.
• Audio Navigation added for the wireless Wind Instrument so you can hear wind conditions or boat speed when they change by more than a set amount. You can put your iPhone/iPad away safe and dry, and use a Bluetooth speaker or earbuds. Keep your hands and eyes free for sailing — no screen required. You can even shut off the screen, to reduce heat and power consumption, and the audio will still happen.
• Bug corrected for opening panel with iPhone display. 5.9.1 03/01/2019 • The optimal tacks to the next waypoint are now automated. When you open the app, your list of waypoints/routes is shown. Just tap one and your optimal tacks are automatically displayed. If you have the wireless Wind Instrument, the wireless connection is also already turned on in InputSet-Up.
• Bug fixed for exporting a polar plot to edit and re-import it.
• Audio Navigation added for the wireless Wind Instrument so you can hear wind conditions or boat speed when they change by more than a set amount. You can put your iPhone/iPad away safe and dry, and use a Bluetooth speaker or earbuds. Keep your hands and eyes free for sailing — no screen required. You can even shut off the screen, to reduce heat and power consumption, and the audio will still happen. 5.9.0 02/23/2019 • Audio Navigation 5.8.9 12/20/2018 • Navionics high-quality marine charts can be used for locations worldwide. Full details at http://eepurl.com/c-t2fP . A log-in bug has been corrected. 5.8.8 08/23/2018 • Navionics high-quality marine charts can be used for locations worldwide. Full details at http://eepurl.com/c-t2fP . A log-in bug has been corrected. 5.8.7 08/15/2018 • Adjustment to display of GPS tracks.
• Navionics high-quality marine charts can be used for locations worldwide. Full details at http://eepurl.com/c-t2fP . If you experience a log-in problem, a server correction is underway at the time of this release. 5.8.6 07/11/2018 • Import high-quality Navionics vector charts for locations worldwide. Full details at: http://eepurl.com/c-t2fP
• Canadian raster charts can no longer be purchased because of CHS issues and cost increases (although previous purchases can still be restored).
• Adjustment for compatibility with new version 1.3.4 of SailTimer API with wireless Wind Instrument. 5.8.5 06/12/2018 • Navionics marine charts now available (and this update fixes recent log-in bug).
• If you have the Navionics Boating app with a Navionics account and an active chart subscription, you can now use those high-quality vector charts here. (Full details at http://eepurl.com/c-t2fP)
• Tide levels and direction/speed of current are also shown on the Navionics charts. 5.8.4 01/15/2018 • ActiveCaptain bug fix.
• We are pleased to announce that worldwide Navionics marine charts are now available!
• If you have the Navionics Boating app with a Navionics account and an active chart subscription, you can now use those high-quality vector charts here. (Full details at http://eepurl.com/c-t2fP)
• Tide levels and direction/speed of current are also shown on the Navionics charts. 5.8.3 12/31/2017 **Holiday sale on new audio interface for app and on Wind Instrument: SailTimerWind.com/HolidaySale
• We are pleased to announce that worldwide Navionics vector marine charts are now available!
• Tide levels and direction/speed of current are also shown on the Navionics charts.
• iOS 11 GPS fix. 5.8.2 10/20/2017 • Worldwide Navionics vector marine charts are now available in this app, including tide levels and direction of current.
• Changes to auto-correct for pasting in waypoints for tacking routes using keyboards for different languages.
• Adjustment made to Navionics login. 5.8.1 09/26/2017 • Something we have been working on for a long time: We are pleased to announce that worldwide Navionics vector marine charts are now available in this app!
• Changes to auto-correct for pasting in waypoints for tacking routes using keyboards for different languages. 5.8.0 09/23/2017 ● Overlay added under Options button for crowd-sourced Live Wind & Race Maps.
● Now when you log in, you’ll have the option to see/share other boats and live wind conditions. Check what it is like out on the water from home or office. Replay races for performance analysis.
● Crowd-sourced wind data is a major new capability for sailboat navigation. Your login will also work at SailTimerMaps.com, where you can create and join events for documenting your cruising or races.
● You only need to log in the first time, and your login is retained for when offline. If you want a bigger screen, you can do the registration at SailTimerMaps.com, then in the app just log in.
● We also use the same login for sharing live wind data from the wireless SailTimer Wind Instrument™ (SailTimerWind.com), and with owners of older wired anemometers who are connecting to the wireless world using the SailTimer Mini-Server™ (SailTimerWind.com/Mini-Server).
● Try it out for yourself with the demo replay under Options > Events, of AC45 catamarans and wind conditions from the lead-up to the 2013 America's Cup.
● Register button had an issue which has now been corrected. 5.7.9 03/03/2017 ● Overlay added under Options button for crowd-sourced Live Wind & Race Maps.
● Now when you log in, you’ll have the option to see/share other boats and live wind conditions. Check what it is like out on the water from home or office. Replay races for performance analysis.
● Crowd-sourced wind data is a major new capability for sailboat navigation. Your login will also work at SailTimerMaps.com, where you can create and join events for documenting your cruising or races.
● You only need to log in the first time, and your login is retained for when offline. If you want a bigger screen, you can do the registration at SailTimerMaps.com, then in the app just log in.
● We also use the same login for sharing live wind data from the wireless SailTimer Wind Instrument™ (SailTimerWind.com), and with owners of older wired anemometers who are connecting to the wireless world using the SailTimer Mini-Server™ (SailTimerWind.com/Mini-Server).
● Try it out for yourself with the demo replay under Options > Events, of AC45 catamarans and wind conditions from the lead-up to the 2013 America's Cup. 5.7.8 02/23/2017 ● Correction to icon for iOS 10, and other minor updates under Options button. 5.7.7 10/31/2016 ● Improvements to Onboard Network option in Setup, for importing wind data from wired anemometers via the iKommunicate wifi device (www.iKommunicate.com). 5.7.6 09/16/2016 ● In Setup, the Onboard Network option can now import wind data from wired anemometers via the iKommunicate wifi device (www.iKommunicate.com).
• Adjustment to Apparent wind speed and direction from the wireless SailTimer Wind Instrument. 5.7.5 08/30/2016
SailTimer™ version 6.2
Updated At: 2025-12-23
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™ version 6.0.4
Updated At: 2025-08-01
Changes: Aug 1, 2025
Version 6.0.4
• Crowdsourced wind map animation - only from SailTimer.
• WNI marine weather used by thousands of ship captains every day.
• Rotation is locked in the orientation the app opens in.
• Correction to wind speedometer on smaller iPhone displays.
SailTimer™ version 6.0.2
Updated At: 2025-06-08
Changes: Jun 8, 2025
Version 6.0.2
• Crowdsourced wind map animation - only from SailTimer.
• WNI marine weather used by thousands of ship captains every day.
• Rotation locked in the orientation the app opens in.
• Other interface improvements.
SailTimer™ version 6.0.0
Updated At: 2025-05-21
Changes: May 21, 2025
Version 6.0.0
• Crowdsourced wind map animation - only from SailTimer.
• WNI marine weather used by thousands of ship captains every day.
SailTimer™ version 5.9.5
Updated At: 2024-03-22
Changes: Mar 22, 2024
Version 5.9.5
Navionics marine charts, aerial photos and land maps are all available in the app. All now support creating and viewing waypoints, routes and GPS tracks.
SailTimer™ version 5.9.4
Updated At: 2023-02-11
Changes: Feb 11, 2023
Version 5.9.4
• New button for wireless Wind Instrument.
• Polar plot learning is now free (the boat's performance profile in all wind angles and wind speeds). The app can use this to calculate your unique boat's optimal tacks more accurately (but does come with a default polar plot).
SailTimer™ version 5.9.2
Updated At: 2022-07-27
Changes: Jul 27, 2022 Version 5.9.2
• Polar plots updated for recent versions of iOS, so you can export polars to edit them, then re-import.
• Fixed bug with in-app purchase buttons.
SailTimer™ version 5.9.1
Updated At: 2019-03-01
Changes: Mar 1, 2019 Version 5.9.1
• The optimal tacks to the next waypoint are now automated. When you open the app, your list of waypoints/routes is shown. Just tap one and your optimal tacks are automatically displayed. If you have the wireless Wind Instrument, the wireless connection is also already turned on in InputSet-Up.
• Bug fixed for exporting a polar plot to edit and re-import it.
• Audio Navigation added for the wireless Wind Instrument so you can hear wind conditions or boat speed when they change by more than a set amount. You can put your iPhone/iPad away safe and dry, and use a Bluetooth speaker or earbuds. Keep your hands and eyes free for sailing — no screen required. You can even shut off the screen, to reduce heat and power consumption, and the audio will still happen.
• Bug corrected for opening panel with iPhone display.
SailTimer™ version 5.9.1
Updated At: 2019-03-01
Changes: 1 Mar 2019 Version 5.9.1
• The optimal tacks to the next waypoint are now automated. When you open the app, your list of waypoints/routes is shown. Just tap one and your optimal tacks are automatically displayed. If you have the wireless Wind Instrument, the wireless connection is also already turned on in InputSet-Up.
• Bug fixed for exporting a polar plot to edit and re-import it.
• Audio Navigation added for the wireless Wind Instrument so you can hear wind conditions or boat speed when they change by more than a set amount. You can put your iPhone/iPad away safe and dry, and use a Bluetooth speaker or earbuds. Keep your hands and eyes free for sailing — no screen required. You can even shut off the screen, to reduce heat and power consumption, and the audio will still happen.
• Bug corrected for opening panel with iPhone display.
Disclaimer
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