Anchor Sentry
Michael Dieter Konz Navigation iPhoneiPadiPod touch
Anchor Sentry is a paid Navigation app for iPhone and iPad by Michael Dieter Konz. Rated 4.0/5 from 4 ratings. Requires iOS 15. Updated September 25, 2026.
- Rating
- 4.0
- 4 ratings
- Price
- 3.99 USD
- on the App Store
- Size
- 91 MB
- Age 4+
- Updated
- Sep 25
- 2026 · v2.12.2
Screenshots
About Anchor Sentry
Anchor Sentry is an app to monitor the ship's position at anchor and inform the skipper when the anchor is dragging and thus the ship leaves the setup perimeter. Features: - Show current position on GoogleMaps map or Navionics map (To gain access to Navionics maps from this application, users with an active Navionics subscription in the Navionics Boating application must register with their Navionics credentials) - Distance circles to help finding a good anchor position - Drop anchor by tapping on map or by position or by bearing and distance - Can be used for anchoring with shore lines by watching the heading rather than the position - Tracks can be saves as GPX file for later processing - Option to set up prohibited zones which will trigger an alert when entered. These can be used indepent of the anchor state - Runs in the background even while other apps are used - Unique sync functionality which allows to pair two or more devices together to see the ships position even while out to shore for dinner - Barograph function included - Display real echo sounder data from a providing NMEA server - Optional compass overlay to help finding the bearing to the anchor - Option to show current position visible to friends and family on the Anchor Sentry website - Proximity alert between ships both using Anchor Sentry. To get warned when your neighbours anchor is dragging. - Automatic anchoring feature - Display maximum swinging circle - Save favorite anchoring places with pictures - Several setup options to customize your app
What’s new
Version 2.12.2 · Updated September 25, 2026
• Fixed a possible freeze when starting the app. • Fixed a rare crash while the proximity alert is active. • New: at start, the app now lets you know when a newer version is available in the App Store. You can postpone the notice or skip that version, and it never appears while an anchor watch is running.
App privacy
The developer, Michael Dieter Konz, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Location: Precise Location
- Identifiers: User ID
Used for: App Functionality
Alternatives to Anchor Sentry
Looking for apps like Anchor Sentry? Here are 6 similar apps on the App Store. The highest rated is SailTies: Logbook GPS Tracking (4.9/5), and all 6 are free to download.
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Anchor Alarm / Watch
4.7
-
B&G: Companion App for Sailors
4.0
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Raymarine
1.5
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SailTies: Logbook GPS Tracking
4.9
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Anchor Alarm: ZENKOU PRO
4.5
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Navily
4.8
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Anchor Sentry | 4.0 / 5 (4 ratings) | 3.99 USD | September 25, 2026 | |
| Anchor Alarm / Watch | 4.7 / 5 (812) | Free | Oct 6, 2026 | Compare |
| B&G: Companion App for Sailors | 4.0 / 5 (383) | Free | Jun 17, 2026 | Compare |
| Raymarine | 1.5 / 5 (17) | Free | May 28, 2026 | Compare |
| SailTies: Logbook GPS Tracking | 4.9 / 5 (389) | Free | Aug 31, 2026 | Compare |
| Anchor Alarm: ZENKOU PRO | 4.5 / 5 (177) | Free | Jun 4, 2025 | Compare |
| Navily | 4.8 / 5 (835) | Free | Oct 5, 2026 | Compare |
Compare Anchor Sentry with the top alternatives: ratings, updates, ASO score and keyword gaps →