This app is mainly designed for women when they are travelling alone. If a women/men feel that they were in danger they can open the app which gives their current location and they can SMS their location to the predefined people which they can set in settings view.
If anyone travelling in a cab or any auto if the driver is opting for a shortcut route which doest know you and you feel the situation is danger, then u can turn on the app which gives the exact address of your location. The users not only send SMS but also can share their location in social networking sites like Facebook and Twitter.