Anchor Alert

The world's most advanced smart-phone based anchor alarm!

Features anchor projection, exclusion area & safe zone, audio/vibrate/SMS alert, control by SMS, background tasking and more.

Please note: GPS accuracy and performance depends on your phone's hardware.

See http://www.slimjimsoftware.co.uk for full details.

Recent changes:
made monitoring warnings more readable, cardinal points off by default (see preferences to switch back on)