DriftWatch
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Free · In-App Purchases
New in DriftWatch: review alerts in the Anchor Journal and pause or resume anchor monitoring from your Apple Watch.
DriftWatch is a GPS anchor alarm for iPhone and iPad. Set your anchor position, choose a monitoring radius, and receive an alert if your boat drifts outside the circle for longer than your chosen alarm delay.
Keep your device within earshot overnight, especially if your boat’s built-in anchor alarm is hard to hear from the cabin. With Background Monitoring enabled and the required permissions granted, DriftWatch can continue monitoring while the screen is locked.
- Monitor your anchor. See your boat’s position, distance from the anchor, GPS accuracy, and monitoring status at a glance.
- Use your Apple Watch. Check the monitoring status and pause or resume monitoring from your paired watch.
- Review what happened. The Anchor Journal records alarms, anchor coordinates, and GPS interruptions. You can export your history as a CSV file.
- Check the wind. A wind subscription provides a 24-hour forecast at your anchorage.
- Get started quickly. The built-in guide walks you through setup and testing the alarm.
Battery warning: Continuous GPS monitoring can drain your battery quickly, even with the screen locked. Keep your iPhone or iPad plugged into a power source during long monitoring sessions, especially overnight. DriftWatch can alert you when the battery drops below your chosen threshold while unplugged.
DriftWatch is a supplementary anchor alarm. Continue to keep a proper watch at anchor.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
DriftWatch has been rebuilt for iPhone and iPad with a clearer anchor monitoring status and easier-to-read controls.
- Pause or resume anchor monitoring from your paired Apple Watch.
- Review alarms, anchor coordinates, and GPS interruptions in the new Anchor Journal. Export your history as a CSV file.
- Find setup and alarm-testing instructions in the new Quick Start guide.
- Browse the 24-hour wind forecast with an improved hourly slider.
Customers who bought the original paid app keep unlimited anchor monitoring. Wind forecasts require a wind subscription.
The developer, Rene Dacier, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Rene Dacier
- Size
- 5.4 MB
- Category
- Navigation
- Compatibility
Requires iOS 17.4 or later.
- iPhone
Requires iOS 17.4 or later. - iPad
Requires iPadOS 17.4 or later. - Apple Watch
Requires watchOS 10.4 or later.
- iPhone
- Location
- This app may use your location even when it is not open, which can decrease device battery life.
- Languages
- English and French
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- 24H Wind Forecast. USD 9.99
- Remove Time Limit USD 3.99
- 24H Wind Forecast USD 9.99
- Copyright
- © Rene Dacier 2015