Safety Anchor Alarm

Sleep Peacefully at Anchor.

Your anchor watch, always on. Safety Anchor Alarm monitors your vessel's GPS position and alerts you if your anchor drags — even while your screen is locked or you're using other apps. Built for real sailors, tested in real anchorages. Whether you're anchored overnight or waiting out weather, rest easy without constantly checking your position. The most reliable anchor watch and boat monitor for iOS, Apple Watch, and Dynamic Island.

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WHY SAILORS CHOOSE SAFETY ANCHOR ALARM

APPLE WATCH COMPANION APP

Monitor your anchor watch from your wrist. Live radar screen shows your boat's position and alarm status in real time. When your anchor drags, your Watch alerts you with sound and haptic vibration — even while sleeping.

LIVE ACTIVITY & DYNAMIC ISLAND

See your anchor status, distance, and safe radius directly on your Lock Screen and Dynamic Island — without even opening the app. Always know where your boat lies at a glance.

RELIABLE BACKGROUND MONITORING

Continuous GPS tracking in the background while your screen is locked or you switch to other apps. The blue location indicator confirms your boat is being watched at all times.

POWERFUL ANCHOR DRAG ALARM

When your vessel moves beyond the safe radius, a loud alarm sounds immediately — even in the background. The alarm cuts through, so you never miss a critical alert.

SMART GPS VERIFICATION

Minimizes false alarms caused by GPS signal spikes. Smart verification confirms real anchor drag before triggering the alarm.

SMART RADIUS CONTROL

Set your watch circle with precision. Fine-tune your anchor point on the map and adjust the alarm radius meter by meter.

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BUILT-IN SAILING TOOLS

ANCHOR CHAIN CALCULATOR

Calculate the ideal chain length based on water depth, freeboard height, and desired scope ratio. Get the exact chain you need for a secure hold.

SWING CIRCLE CALCULATOR

Visualize your boat's full swing radius based on chain length, water depth, and vessel size. Know exactly how much room you need before you drop anchor.

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DESIGNED FOR EVERY CONDITION

NIGHT MODE

A fully optimized dark interface reduces glare and protects your night vision. Every screen adapts for low-light conditions — perfect for overnight anchor watches.

ANCHOR HISTORY

Review your past anchorages with detailed session data: duration, maximum drag distance, GPS track, and more. Revisit your favorite spots or analyze how your anchor held in different conditions.

CUSTOMIZABLE SETTINGS

Configure location update intervals, alarm sensitivity, volume levels, and measurement units to match your sailing style. Fine-tune the balance between accuracy and battery life.

12 LANGUAGES SUPPORTED

Available in English, Turkish, German, Spanish, French, Portuguese, Italian, Swedish, Norwegian, Finnish, Dutch, and Danish — built for sailors worldwide.

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HOW IT WORKS

Drop your anchor and open the app
Tap to set your anchor point on the map
Adjust the safe radius to match your swing area
Start the alarm and go about your day — or night

No complications, no unnecessary steps.

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SAFETY YOU CAN TRUST

Designed with one mission: keeping your boat where you left it. Precise GPS positioning, high-accuracy tracking, and every feature built around reliability. Continuous GPS use in the background can decrease battery life. We recommend keeping your device plugged in during extended anchor watches.

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SUBSCRIPTION INFORMATION

Safety Anchor Alarm is free to use with core features. Premium unlocks Anchor History, Sailing Tools, and extended alarm sessions.
Payment is charged to your Apple Account at confirmation of purchase. Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. You can manage or cancel anytime in your App Store settings.

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