Anchor Basic 对比 Anchor Zone Alarm 的使用情况和统计数据

A fully functional anchor alarm designed for iPhone & iPad. - Simple and reliable with user selectable units, drift warning and low battery alarms. - Pause the alarm and take your device with you; simply continue drift monitoring when you return. - Set the anchor at the current location or a bearing & distance to the anchor. - Use Anchor Basic to remotely monitor Anchor Plus. Go ashore for dinner and monitor your friends Anchor Plus alarm using Anchor Basic. - If you like this version, try Anchor Plus with a host of additional features

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Anchor Zone Alarm

Anchor zone alerts you if you drift out of a designated area that you draw on the map with your finger. Sleep sound during the night. It can't get any simpler than this. Brought to you be NauticEd International Sailing Education Company.