Should Be Here app for iPhone and iPad

Allows you to set pins at various locations on world maps, set distance(s) around the pin(s), and to alert the user and others when the phone goes into or out of the region(s). An alert email is sent to a nominated email address so another person can receive the alerts.

Features:

Customised pin locations and images for pins - multiple pins;
Customised alert messages for each pin;
Zoom in/out around the world to view all pins;
Email alert system with date/time stamp;
Alerts for entering and/or exiting designated areas;
Tap and drag pins;
Alert "pings" when phone locked;
Audio plus visual (red flashing circle) alert on world map indicating the zone entered or exited
Use of the iPhone GPS system.

Great for:

Security / tracking of friends, family or work colleagues
Emergency management - set a clearance zone around an accident site (fire, chemical, explosion, fumes/gas risk)
Alert system for people in new and unfamiliar areas - work sites, couriers etc.