DriftWatch

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/