Also try* Nirbhaya: This app can send SOS/distress messages with location updates to pre-defined SMS contact groups, Facebook walls and secure websites. It also lets you call emergency helpline numbers.* Sentinel: Works in multiple scenarios even without triggering an alert manually. A forced power off of the phone, or prolonged signal loss can cause a fail-safe alert. You can call, email or send SMS alerts to multiple pre-configured numbers. The alert consists of your last known location, time and direction of travel.* GoSuraksheit: Sends an SMS to list of pre-provisioned contacts. This SMS includes a customised message, the details of your current location and a link to the exact location on the map. It updates your Facebook status with the same content as the SMS and sends a call to a pre-provisioned emergency number. It also triggers a loud alarm to seek attention.