Anchor Alert

3.7
45 reviews
1K+
Downloads
Content rating
Everyone
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About this app

Anchor Alert is an advanced anchor alarm application made in New Zealand 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
- silent or audible alarms, with or without vibration
- vessel tracking, historic location traces and more

Note: to re-enable SMS alerts, please see https://slimjimsoftware.co.uk/#enablesms for instructions.

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

See http://www.slimjimsoftware.co.uk 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.

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!
Updated on
Mar 20, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

3.8
42 reviews
David Sharman
June 4, 2023
I tried this when at anchor a few weeks ago. There was some poor weather overnight and I thought it would be a good test. Used my phone for the install. Excellent mobile signal in the area, and good GPS/etc coverage. First time I set it with a very small swinging circle and it went off OK. Next time I set it with a slightly larger one and it didn't go off all night. The following day I repositioned to a nearby harbour and it went off about 1,000m (1,000-yards approx) away. Not recommended.
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SlimJiM Software
June 4, 2023
Hi David, sorry to hear that, please contact me via email and I'll be happy to provide a full refund. For future reference, the GPS update interval in settings is set to 60 seconds by default but it can take longer to obtain a fix especially while moving. Changing this to a lower value can improve accuracy but at the expense of battery life.
Simon Jenkins
July 18, 2022
Good so far, even though it is relatively easy to use it would be nice to have a youtube tutorial.
1 person found this review helpful
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A Google user
September 16, 2019
Excelente .
4 people found this review helpful
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What's new

Fix a minor bug where set anchor screen does not show when restarting the app immediately after shutting it down