Anchor Alarm

In-app purchases
650 reviews
Content rating
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About this app

Anchor Alarm - The anchor guard for your boat
Get alerted as soon as your ship aborts.

Set the radius and click on Start to start the anchor alarm.
As soon as your ship leaves the radius, your device alerts you with an unmistakable alarm tone.
In addition, you can move the monitored area and correct it to the nearest meter.
The location history of the boat is recorded and can be seen from the small points.

With our remote monitoring feature, you can connect two devices together.
The sender remains on the boat while you are on land.
As soon as the sender leaves the area you will be alerted on the way.
(stable internet connection required)

With our anchorage search, you can search for anchorages in your area where other crews have anchored before. Try this module for free for 3 days!

Terms of Use:
To prevent problems when using Anchor Alarm, please add the app to the exceptions of the battery optimizations of your system!
Also see our FAQ page at for further help.
Updated on
Aug 8, 2022

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.
This app may share these data types with third parties
App activity and App info and performance
This app may collect these data types
Location, Photos and videos, and Device or other IDs
Data is encrypted in transit
You can request that data be deleted
650 reviews
Tereza Synáčková
June 27, 2022
I downloaded this app so that it wakes me up if something goes wrong with the anchor. But the sound the app makes - default with no possibility to change - is rather funny, 3 silent honks. Oh there is a possibility to change the alarm - to a quiet delivery. You can not call this alarm.
Did you find this helpful?
w+h GmbH
June 28, 2022
Hello Tereza, thanks for your review. The alarm volume is dependent of your notification volume. Please make sure your device is not muted, vibrate only or in do not disturb mode and check if the notification volume is loud enough. Then test the alarm by moving the area. For more help, check our FAQ at or contact us there.
Ian Hogg
June 25, 2022
Initial testing looks very promising. An improvement i suggest is 1. To locate the distance of the radius displayed on the map perhaps above the center as the direction line cuts through the digit and you can't read what it is. 2. Before turning in for the night, I like to test the alarm works. When I manually shift the center to check the alarm it is only visual, I do not get audible alarm when manually shifting the alarm radius for test. But it seems exactly what I want. Easy and simple.
1 person found this review helpful
Did you find this helpful?
w+h GmbH
June 27, 2022
Hello Ian, thank you for your feedback. We have noted the problem with the readability of the distance label. For having no audible alarm, check the first entry of our FAQ at Most likely your phone was muted or notifications were disabled. Check if everything is set and try again, otherwise contact us through our website.
Wenzday Jane
April 22, 2022
Would be a good app but it doesn't always work. I accidentally left in the dinghy with my phone with the app running and i got all the way across the bay before the alarm went off.
2 people found this review helpful
Did you find this helpful?
w+h GmbH
April 27, 2022
Hello, please make sure that the GPS has been fully enabled on your device. Also it often helps to enable Google Location Services to improve the accuracy. Both accessible in the system location settings. If you still can't resolve the problem send us further details/screenshots at so we can take a closer look. Best regards, Daniel

What's new

Subareas such as a semicircle or angle can now be monitored
GPS accuracy is shown at the bottom of the map
Buttons to move the area can now be held down
A warning appears when app or device notifications are off, silent, or do not disturb is enabled and therefore the acoustic alarm does not work
Several optimizations and bug fixes