Marine
Anchor alarm & geofence — peace in the anchorage
Monitor radius and position — alarm when the boat leaves the zone. Data stays local, no server tracking.
Sleepless nights in the bay
Wind shifts and current stress the anchor. A simple circle alarm beats getting up constantly — if it is reliable and cloud-free.
Geofence on the device
- ·Anchor alarm with adjustable radius
- ·GPS-based monitoring — local
- ·Combined with logbook (anchor, cast off)
- ·No subscription for the core feature
- ·Clear alerts on the iPhone
Monitoring without a server
Logic runs on the device. GPS from the iPhone — no NauticCalc cloud service.
Aid to navigation
Does not replace a proper anchor watch or VHF guard — complements your usual routine.
Frequently asked questions
Depends on iOS power settings and permissions. For critical anchorages, also plan logbook entries and visual checks.
No for the geofence alarm — GPS is enough.
Related topics
Sleep more soundly
One-time purchase
