ResQ sends voice notifications and messages of your current location to families and friends. Create a username, add your friends/family and form a group. To add your friends, request your friends to install the app and create a username. Once you have formed a group, you can simply click the group and press the emergency button, in case of emergencies. Remember to ask your friends to keep the app open to receive notifications. As a background app, ResQ is a long running app that works even in lock screen mode.