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Android Apps > Maps & Navigation > SailTimer™
SailTimer™ icon

SailTimer™

7.0
SailTimer Inc.
4.18
487 reviews
100,000+
Downloads
Free

A marine weather and chartplotter app for all boaters.

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Screenshots by SailTimer Inc., from the Google Play listing
View on Google Play

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.

Official page on Google Play

User feedback

Ratings and reviews on Google Play

Comments on SailTimer™ for Android

★★★★★ Lindsey Rogerson · Oct 9, 2024
Fantastic wind and sailing navigation app.
★☆☆☆☆ Homi Parakh · Oct 28, 2021
It's a useless app, no AIS, avionics is cheaper n better from OEMs. Plus No functions on the App.
★★☆☆☆ Stephen Fewtrell · Feb 26, 2021
Started off with a decent marine map, which was good. I have a Avionics subscription so in the settings, I selected charts, and Avionics. The chart it brought up is next to useless and is not my Avionics subscription definition map. The App won't let me go back to the default map that it started with, even after uninstall and reinstall. I've uninstalled the App as the map is no good, not showing any Marine navigation marks. Developers, please improve maps options and Avionics interface.

Google Play Rating history and histogram

350
44
0
0
88

Store listing

By SailTimer Inc., from Google Play
Description by SailTimer Inc. Written by the developer, not by AppBrain. Click to read.
For all types of boats. Beautiful marine weather animations:
• 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™

10 permissions · 19 libraries
Subscribe to see full permission and library details

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
Show all changes Show fewer

Alternatives

Similar apps and more from SailTimer Inc.

Alternatives to SailTimer™

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TideWise: NOAA Tides & Weather icon TideWise: NOAA Tides & Weather
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Weather: Live Forecast & Radar icon Weather: Live Forecast & Radar
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PredictWind Offshore Weather icon PredictWind Offshore Weather
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SeaPeople: Boat Tracker icon SeaPeople: Boat Tracker
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WindHub - Marine Weather icon WindHub - Marine Weather
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SaltWeather icon SaltWeather
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More from SailTimer Inc.

SailTimer Wind Gauge™ icon SailTimer Wind Gauge™
SailTimer Inc.
3.2
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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 charts

Google Play Rankings for SailTimer™

This app is not ranked

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

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Developer information for SailTimer Inc.

SailTimer Inc.

info@SailTimerinc.com

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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.

Share SailTimer™

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PredictWind - Marine Forecasts icon PredictWind - Marine Forecasts
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TideWise: NOAA Tides & Weather icon TideWise: NOAA Tides & Weather
Weather: Live Forecast & Radar icon Weather: Live Forecast & Radar
PredictWind Offshore Weather icon PredictWind Offshore Weather
SeaPeople: Boat Tracker icon SeaPeople: Boat Tracker
WindHub - Marine Weather icon WindHub - Marine Weather
SaltWeather icon SaltWeather
Overview Alternatives History Reviews Rankings Technology
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