EH Anchor Alarm
Marc Suxdorf Navigation iPhoneiPadiPod touch
EH Anchor Alarm is a free Navigation app for iPhone and iPad by Marc Suxdorf. Requires iOS 16.1. Updated September 26, 2026.
- Price
- Free
- on the App Store
- Size
- 14 MB
- Age 4+
- Updated
- Sep 26
- 2026 · v2.5.2
Screenshots
About EH Anchor Alarm
EH Anchor Alarm is the reliable anchor alarm / anchor watch app for sailors. Developed by liveaboards in the Mediterranean, the app is built for real anchoring situations where your phone should keep monitoring while you sleep, rest or leave the ship. EH Anchor Alarm alerts you even when the screen is locked if your ship leaves a freely defined anchor zone. Create your anchor zone directly on the map, adjust it flexibly and monitor your ship’s position over time. A heatmap shows how your boat has moved inside the anchor zone, helping you understand swinging patterns, current, wind shifts and holding behavior. EH Anchor Alarm also includes a wind alarm to monitor ship movement within the anchor zone, plus a 12-hour Open-Meteo wind forecast for your anchorage. Remote monitoring is supported with the additional EH Monitor App also 100% free. Key features: * Anchor alarm / anchor watch with background monitoring * Alerts even with the screen locked * Freely defined anchor zones * Simple drawing and flexible adjustment of the anchor zone * Heatmap showing vessel movement over a longer period * Additional wind alarm for movement inside the anchor zone * 12-hour Open-Meteo wind forecast at your anchorage * Remote monitoring with up to 5 EH Monitor apps EH Anchor Alarm will always be 100% free, with no ads and no tracking — from us for you.
What’s new
Version 2.5.2 · Updated September 26, 2026
Version 2.5.2 IMPORTANT: Anchor button: First tap sets the anchor at the vessel position. Tap again to open the Anchor & Chain dialog and edit values. Long tap deletes the anchor. - Corrected anchor swing area visualization and position, plus some missing translations in the Anchor & Chain dialog. - New on iOS: Anchor alarms can use Critical Alerts, allowing the alarm sound to override Silent Mode and Do Not Disturb/Focus. - Experimental: Automatic compass deviation table, e.g. at the bow, to take a bearing on the anchor using the chain direction. - Experimental: Receive wind, depth and location data via UDP broadcast from an onboard Wi-Fi gateway. - Data now also shown in the EH Monitor App.
App privacy
The developer, Marc Suxdorf, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to EH Anchor Alarm
Looking for apps like EH Anchor Alarm? Here are 6 similar apps on the App Store. The highest rated is Anchor Alarm Pro (5.0/5), and 5 of the 6 are free to download.
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Anchor Sentry
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Anchor Alarm Pro
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Sailino Anchor
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YachtLog by NAVISMARE
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EkyNavy - Sailing Logbook
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iStreams North Sea (NW)
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| EH Anchor Alarm | – | Free | September 26, 2026 | |
| Anchor Sentry | 4.0 / 5 (4) | 3.99 USD | Sep 25, 2026 | Compare |
| Anchor Alarm Pro | 5.0 / 5 (2) | Free | Oct 16, 2026 | Compare |
| Sailino Anchor | – | Free | Aug 17, 2026 | Compare |
| YachtLog by NAVISMARE | – | Free | Aug 3, 2026 | Compare |
| EkyNavy - Sailing Logbook | – | Free | Sep 21, 2026 | Compare |
| iStreams North Sea (NW) | – | Free | Jul 15, 2026 | Compare |
Compare EH Anchor Alarm with the top alternatives: ratings, updates, ASO score and keyword gaps →