Anchor Alert

Anchor Alert


(4 stars)


Download for Android Like

500 - 1,000 downloads

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Anchor Alert is an advanced anchor alarm application made by a professional software developer and MCA certified Yachtmaster. It was the first anchor alarm available for Android devices and remains the number one choice of serious boaters. It uses a unique anchor projection algorithm which automatically takes into account the magnetic-declination of your location to more accurately set the anchor watch point. It has a clutter-free interface and runs fully off-line (after initial verification). It has been designed primarily to maximise reliability and battery life while allowing the user the greatest degree of flexibility and customisation possible.

Some of Anchor Alerts features:
- unique anchor projection system, just point and click and your anchor position is set
- user defined swing area with 'touch-to-set' exclusion and slack zones
- very low memory usage and the longest battery life in its class
- can be set to run completely in the background while you use your phone / tablet for other things
- can be controlled by SMS* from an authorised second phone and can be set to send SMS alerts* with embedded Google maps URLs (* on devices that support telephony only)
- silent or audible alarms, with or without vibration
- vessel tracking, historic location traces and more

If you want the best anchor alarm / anchor watch for Android, you want Anchor Alert.

See for a full run-down of features.

** GPS accuracy and performance depends on your phone's hardware. Please read the help page fully and make sure you understand how to tell if the anchor alarm is running in the background and how to completely stop it.

NOTE: some Android devices using versions 4.0 to 4.0.4 are known to be overly aggressive when shutting down background tasks, this interferes with Anchor Alerts background function and may cause it to be shut down after a few hours without warning. if you own one of these affected devices please contact your carrier about an upgrade to 4.0.4 or later, in the meantime you should only use foreground mode. Android versions 2.x, 3.x and later than 4.0.4 should not be affected.

Finally, please email me and let me know how I can make this anchor alarm / anchor watch app better before leaving negative reviews. My goal is a 5 star rating from everyone that buys this app, please help me achieve this!

Tags: anchor alert, anchor alarm, anchor, anchoralert, ancor alert, anchor alarm application, anchor alarm sms, best anchor alarm, anker alert, anchor_alarm.

Recently changed in this version

Added multi-touch support for setting exclusion zone.
Re-implemented help viewer to work around bug in Android WebView component.
Re-implemented alert dialog to fix rare re-launch bug.

Support devices without a hardware compass (bearing will need to be entered manually on such devices)
Various user interface and performance improvements

Improved Android 5 support
Fix for errant trace on screen rotation

Recognise international phone numbers in SMS functions

Comments and ratings for Anchor Alert
  • (58 stars)

    by QES Padilla on 30/01/2015

  • (58 stars)

    by Greg Close on 05/01/2015

    Tried them all. Thuis is the easiest to use and most configurable. And ost importantly you don't have to set it while anchoring - easy to set later. Well worth the money.

  • (58 stars)

    by Martino Poretti on 27/05/2014

    For sure the best in his category

  • (58 stars)

    by Nigel Heaton on 02/01/2014

    Don't think twice about having to pay for this app. It's the best app for sailors that has been developed. It certainly worked for me and alerted me to a potentially disastrous situation for which I am eternally grateful. Works better than my Garmin! I notice my original story appears on the website so I won't repeat it here. One thing that is interesting is that although I have a steel boat

  • (58 stars)

    by Daniel Otte on 08/07/2013

    You must have this if you anchor your boat and can't stay on deck to be sure you stay put. Sleep soundly or go ashore for the day and know the boat is where you put it.

  • (58 stars)

    by Erik Gerking on 03/03/2013

    I used this app sailing in the San Juans last summer. I am a fairly novice and paranoid sailor, but using this app allowed us to have an amazing week. Using this app we were able to anchor in some very tight conditions in weather. There was one night where the app detected us dragging the achor in a tight anchorage with other boats. Without this app, our sailing trip would have: a) not been pos