I am looking for a app that can be sent push notifications from a gmail email address. On this app I would like options for individuals to press "Enroute", "Onscene" "Monitoring Only" or "Unavailable". Each of these status changes would be accesible to be seen by other users who select thier status. The goal of the app is for users to be aware of fire incidents happening in our district, with their status of response noted to others. We are a volunteer organization so the price of being low is a must due to us being solely volunteers.