# DragAlarm (Anchor guard) > Boat anchor monitoring and dragging alert application. (iPhone/iPad app by Alejandro.) - Source: https://appshunter.io/ios/app/dragalarm-anchor-guard/id594556110 (this page in markdown: same URL + `.md`) - Developer: [Alejandro](https://appshunter.io/developer/476976572) - Category: Navigation, Utilities - Price: $9.99 - Rating: 1.00/5 from 1 App Store ratings · 34 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 10 MB - Languages: American English, Catalan, European Spanish - Released: 2013-01-31 - Data updated: 2026-08-30 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/dragalarm-anchor-guard/id594556110/reviews.md ## What is DragAlarm (Anchor guard)? Keep calm. With DragAlarm you can relax in your boat, on the beach, at the bar or wherever you want. This app stands watch and notifies you if the anchor is improperly secured and your boat is dragging. Activate DragAlarm when you're letting go the chain or once you’re anchored. Just following a few steps the app calculates the swinging radius or otherwise you can enter it manually. Once it has been configured, you will see the map with the location of the anchor on the screen, the swinging circle and the ship with her tracking. Remember that you should let go the chain at least 3 times the depth to ensure a good anchorage. - No internet connection required. (Except for the alert via email). - It is recommended to use the app with the iPhone / iPad plugged in. - Setting the map type: map, hybrid or satellite. - Setting the GPS accuracy to save battery power. - Changing measurement units: meters, feet or fathoms. - Alert via email with information regarding dragging distance, position, time, GPS error and battery level. - Ability to respond to the alert on your Apple Watch. WARNING A continued use of the GPS in the background can dramatically decrease the battery life. DragAlarm makes use of the GPS antenna. Take into account that not all iOS devices have this inbuilt antenna and therefore this app may not work properly. All iPhones do have the antenna. Only the 3G Cellular iPad with data connection has GPS antenna. Drag Alarm is an app developed by Marinus. Marinus, improving the maritime sector. Marinus Apps www.marinusapps.com ## Key features - Anchor dragging alerts - GPS tracking - Swinging radius calculation - Offline map support - Email notifications - Apple Watch integration ## Recent user reviews (10 of 34) All indexed reviews: https://appshunter.io/ios/app/dragalarm-anchor-guard/id594556110/reviews.md ### 5/5 — Antigarreo *2024-06-24, version 2.5.1* Muy contentos! ### 1/5 — App needs removed from the market!! *2021-09-09* This app is ridiculously bad and inaccurate. By the support page it’s obviously just not supported. I want my money back! ### 1/5 — Una vergüenza *2021-09-05, version 2.5.1* Si quieres no dormir, usala, todo el rato dando falsas alarmas y buscando cobertura, no se calla ni poniendo 50 metros ### 5/5 — Excelente *2021-08-15, version 2.5.1* Da mucha tranquilidad ### 2/5 — Copepod *2021-07-27, version 2.5.1* Good app but drops out after a few hours, can’t depend on the app which makes it useless as an anchor alarm. ### 4/5 — No encuentro compatibilidad con Apple Watch *2020-10-22, version 2.5.1* La aplicación es bastante útil con buena señal gps, pero no soy capaz de sincronizarla para que me de avisos en el Apple Watch, no se si es que no se puede o no lo encuentro ### 5/5 — Perfecta *2020-10-02, version 2.5.1* Estoy muy contento con esta aplicación. Funciona perfectamente. Es ideal para avisar si el barco garrea y así estar tranquilo fondeado. ### 5/5 — No me llegan los email *2020-09-01, version 2.5* Ruego me indiquen porque no me llegan los email cuando salta la alarma AntiGarreo. Tengo un iPhone 7. ### 5/5 — Gran compañero de guardia *2020-07-10, version 2.5* A pesar de las falsas alarmas si le das un radio más amplio y te posicionas una vez ha pasado algo de tiempo desde el fondeo es un vigía infalible para dormir tranquilo. Gran App ### 4/5 — Pierde GPS *2019-08-28, version 2.5* De vez en cuando. Pierde GPS. Continuamente. ## Frequently asked questions about DragAlarm (Anchor guard) ### What is DragAlarm? DragAlarm is a navigation app designed to monitor your boat's anchor. It alerts you if the anchor is improperly secured and the boat is dragging, providing peace of mind while you are away from your vessel. ### Does DragAlarm require an internet connection? No internet connection is required for DragAlarm's core functionality, making it reliable even in remote areas. An internet connection is only needed if you opt to receive alerts via email. ### How does DragAlarm calculate the swinging radius? You can either let the app calculate the swinging radius automatically or enter it manually. It's recommended to let out chain at least 3 times the depth for secure anchorage. ### What devices is DragAlarm compatible with? DragAlarm is available for iPhone, iPad, and iPod. It's recommended to use the app with your device plugged in, as continuous GPS use can decrease battery life. ### Can I customize map views in DragAlarm? Yes, you can customize the map view to be standard map, hybrid, or satellite. This allows you to choose the most suitable view for your surroundings and preferences. ### What information is included in the email alerts? Email alerts from DragAlarm include crucial information such as dragging distance, position, time, GPS error, and the battery level of your device. ### Does DragAlarm have ads? No, DragAlarm is ad-free. You can use the application without any interruptions from advertisements. ### What is the price of DragAlarm? DragAlarm is a paid application priced at $9.99. This one-time purchase grants you access to all its features for anchor monitoring. ## Version history (last 5 releases) ### 2.5.1 — 2020-09-05 We have corrected the problem of not sending the email alert. ### 2.5 — 2019-06-06 This update tries to prevent the app from closing after many hours in the background. ### 2.4 — 2018-04-24 Thanks for use DragAlarm. We have updated the app for the iPhone X. Now it looks perfect in the new super retina display. ### 2.3 — 2016-09-07 A little redesign of the app. We have added an intelligent message system! New options on Settings. General improvements and all the bugs reported by you are now fixed. The app works again in iOS 8. ### 2.2.2 — 2016-07-31 Minor bugs fixed. ## Apps similar to DragAlarm (Anchor guard) | App | Rating | Price | Category | | --- | --- | --- | --- | | [AutoGPS](https://appshunter.io/ios/app/autogps/id1164684260) | — | Free | Navigation | | [Virtual Compass º](https://appshunter.io/ios/app/virtual-compass/id1419811000) | 4.6 (305) | Free | Navigation | | [TaRastreado](https://appshunter.io/ios/app/tarastreado/id1117074980) | 1.0 (1) | Free | Navigation | | [HK Traffic](https://appshunter.io/ios/app/hk-traffic/id1165961260) | 4.7 (15) | Free | Navigation | | [I'm here](https://appshunter.io/ios/app/im-here/id1124773280) | 4.0 (1) | Free | Navigation | | [巴士報站](https://appshunter.io/ios/app/id1122920020) | 2.5 (11) | Free | Navigation | ## More apps by Alejandro - [Marinus: boating rules ColRegs / IRPCS / IALA](https://appshunter.io/ios/app/marinus-boating-rules-colregs-irpcs-iala/id476976569) - [Marinus: maritime rules](https://appshunter.io/ios/app/marinus-maritime-rules/id536108872) - [Bearing Pilot](https://appshunter.io/ios/app/bearing-pilot/id622397352) - [WX Course](https://appshunter.io/ios/app/wx-course/id962029758) - [Test Patrón](https://appshunter.io/ios/app/test-patron/id1048203359) All apps by Alejandro: https://appshunter.io/developer/476976572 ## Related topics [anchor panic](https://appshunter.io/ios/topics/anchor-panic) · [anchor alarm pro](https://appshunter.io/ios/topics/anchor-alarm-pro) · [hooked anchor](https://appshunter.io/ios/topics/hooked-anchor) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*