ANCHOR ALARM/WATCH-Drift Alert

Anchor Alarm 219 is a maritime safety application that monitors a vessel’s GPS position while it is anchored or moored when the boater is not present on the boat. If the vessel moves beyond a preset safety circle, the app automatically sends an SMS alert to the boater’s phone to warn of possible anchor drag or theft.

SMS is essential because the boat may be unattended and offline, with no Internet or Wi-Fi connectivity. This feature ensures the boater can be alerted while ashore, even when no one is onboard.

The phone number is entered manually by the user in the Setup screen, stored locally, and can be deleted at any time. The app sends only safety alerts, never promotional messages, and shares no data with the developer or third parties. The app does not change the phone number without the user's knowledge.

One-Time Purchase Required
This app includes a 7-day free trial. After the trial ends, a one-time purchase of $9.99 is required to continue using the app.
Customer Support: Contact us by email at info@y219.com.

CORE FEATURES
• The app runs unattended.
• Drag Detection: Triggers an audible alarm and sends an SMS to a preset phone number if the vessel drifts outside the safe radius. Optionally,
• Set Anchor Alarm: Records your position and monitors movement from the anchor point using GPS.
• Automatic GPS Accuracy Filtering: Uses multiple GPS samples and filters out inaccurate readings.
• Two ways to set up the alarm: Over Anchor by holding the phone over the bow and tapping the button as soon as the anchor reaches the bottom, or use Bearing to Anchor by aligning the boat with the anchor chain or line after dropping anchor, then tapping Set (preferably using the boat’s compass for accuracy).
• Manual or Automatic Heading: Allows setting the bearing to the anchor (degrees from North-magnetic) manually or via phone boat compass.
• False alarm prevention: In the event of a false alarm, the allowance is increased to prevent further occurrences.
• Activity Logs: Keeps a detailed log of anchor status and movement events.
• GPS Loss Alarm: Sounds an alarm and sends SMS every two minutes if the GPS signal is lost.
• Extensive Help System: Built-in help explains each setting and feature clearly.
• NOAA charts(US waters only): View your boat’s live position and alarm settings overlaid on a nautical chart for clear, intuitive monitoring.
• Markers: Add markers to your favorite anchorage or places.
• Measurements tool: Check the distance between two points on the chart.
• Find places to anchor: Link to the website Navily where the best places to anchor can be easily found. (not available on all phones)
• NOAA tide info (US waters only): Tide table for your current location showing predicted and actual in a graphic mode.
• Boat position monitoring: The boat position, the bearing to the anchor, the security circle and previous positions are graphically displayed and updated on the NOAA chart.
• Last anchor status: Snapshot of the boat's last position, last bearing to the anchor, security circle, and previous positions are graphically displayed on the NOAA chart after the alarm is disabled.
• Works in the Background: Continues monitoring and alerting even when the app is minimized.
• Automatic Allowance: Automatically adjusts the safety margin to account for GPS drift, movement patterns, and anchor resets without manual intervention.
PERMISSIONS

• Location: Required to track GPS position.
• SMS: Needed to send alerts to your emergency contact.
• Phone state: Needed to send and receive SMS

DISCLAIMER
This app is a support tool and should not be relied upon as the sole safety system on your vessel. Always maintain a proper watch and backup alarms.

We do not share your personal information with third parties. You have the option to enter your phone number during app setup. The number is stored in the phone's persistent memory and used to send SMS messages. We do not have access to this phone number.