Anchor Pro allows you to set the anchor location directly as you are setting the anchor, or specify the location of the anchor later by providing distance and bearing to the anchor. More advanced users can also specify coordinates of the anchor.

You can specify the allowed area to be a simple circle around the anchor location, or opt for a more advanced area by providing two different distances at specific angles.

The application provides you with enough data to keep you on top of every movement of the boat. You can review all the data from the main screen or graphically check position on the map where you can also see how the boat moved around — perfect for analysis if the anchor is holding or dragging.

The application allows monitoring of the position, GPS reception, and battery level. You can get alerted when any of those metrics reach certain thresholds.

When you are not on a boat you can leave the phone there and get alerted in the event of the alarm. You can be alerted via instant message using a Telegram app or via an email message. With Telegram,​ you can also request the status of the application at any moment.

You can use the Apple Watch app to always have distance, bearing and battery level available in real-time — from your wrist.

The basic functionalities of the application will always be free to use and you have a possibility to test all of the premium features for free as the subscriptions offer a free initial trial period.

Anchor Pro is ad-supported. If you choose to purchase Anchor Premium subscription to remove ads and get extra features, payment will be charged to your iTunes Account at confirmation of purchase. Subscription automatically renews for the same price unless auto-renew is turned off at least 24-hours before the end of the current period. Auto-renewal may be turned off at any time by going to your Account Settings after purchase. Current price for Anchor Premium is $4.49 USD per year and may vary from country to country. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable.

Anchor Pro's terms of use:

Anchor Pro uses background audio and location update modes to keep you alerted when the application is not in the foreground.
Please note: Continuous use of GPS will cause the battery to discharge more quickly.

What’s New

Version 1.3

What's New:
• Help overlay was added to map view to clarify what is the purpose of the buttons
• Premium Settings now include a list of premium features so that decision is easier
Bug Fixes:
• The issue​ on iPads where opening Telegram settings would not function properly is fixed

Ratings and Reviews

4.0 out of 5
4 Ratings
4 Ratings
znuttyone ,

Solid app , a few suggestions

The app does what it’s designed for and does it well. I used it in 14-18mph winds and a high tidal flow area so the boat had a 180 degree swing. As I monitored our position on multiple devices this app was relatively accurate ( iOS gps accuracy could be better) . The interface is very intuitive and straight forward. All in all great job sloth

Suggestions : 1-provide an icon to increase / decrease radius or maybe allow user to drop anchor and then have a settling period where you monitor the speed and drift to determine anchor heading along with rode deployed
2- allow anchor review input , maybe ask for specific info like protection , bottom holding , need wash down , etc and link to active captain account to feed reviews. You could also pull anchorage info from AC and provide a richer Experince to users
3- with tracking of boat movement allow changing the track color , the current color is hard to see in certain lighting
4- Scan WiFi connection for nema2000 GPS and allow to switch to it as primary GPS for higher accuracy. Maybe even have redundancy and intelligence to validate on device against another ( I have two GPS on the boat , one for ais, one for navigation + the iOS device )

Thanks for contacting me ... look forward to seeing the enhancements

Developer Response ,

Dear user, thank you for a really helpful review! I will note the suggestions and try to include them in the next versions of the application.


Peckish Sloth OU
48.9 MB

Requires iOS 11.2 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© 2018 Peckish Sloth OÜ
In-App Purchases
  1. Anchor Premium $4.49


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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