100 ft
default radius
iOS Critical
bypasses Do Not Disturb
Battery-efficient
background GPS
Free
core alarm feature
01 RELIABILITY
An alarm that cannot be silenced.
Anchor Safe uses iOS Critical Alerts — the same system hospitals use for urgent notifications. Your phone will sound, even in Silent Mode and Do Not Disturb. When the boat moves, you wake up.
Critical Alert
Anchor Drag Detected
You've moved beyond your 100 ft radius.
Bypasses Do Not Disturb and Silent Mode
02 SIMPLICITY
Set up in under thirty seconds.
Drop the hook, open the app, set a radius, tap Start. No manual, no configuration screens, no pairing. The anchor pin goes where you are; the radius goes where you want it.
Setup in under 30 seconds
Drop your hook
Open Anchor Safe
Set radius · tap Start
Monitoring · 24 ft from anchor
03 PEACE OF MIND
Rest below deck. Really rest.
Constant GPS monitoring in the background — battery-efficient, always-on, always watching your position. Solo passage or overnight at anchor: Anchor Safe has the watch.
Live Status
Distance
24 ft
Radius
100 ft
SOG
0.0 kts
GPS Signal
Strong
Battery Saver mode active · iOS background location
04 PRICING
Safety without a paywall.
The core alarm is free, always. Premium adds forecasts and extras — never the alarm itself.
Free
$0
Forever free
- Anchor Watch with GPS monitoring
- iOS Critical Alert drag alarm
- Adjustable radius (10 – 2,000 ft)
- Battery Saver mode
- Basic position history
Set anchor.
Rest easy.
Free to download. No account required. Works offshore, in a cove, or anywhere your phone has GPS.