Vigilant is an affordable and hassle-free personal safety app that connects you to friends, family and emergency services without the need to operate your phone (in front of the attacker).
In particular, one has to unplug their headphones from their device to notify their trusted circle of danger. Vigilant sends an sms to the references listed in the trusted circle containing the gps co-ordinates of the location of the danger.
Vigilant also initiates a series of audio/video recordings automatically (typically 10s long), and sends them via email to the trusted circle.
Vigilant tracks crime statistics mined from police crime records and increases the level of response in face of danger.