App for android, iphone and a node.js server for a service for helping people to interact with bears

Scope of the project is to create a small mobile app with the following User Requirements: The App has to be available on iOS and Android and is characterized by three distinct sections and more precisely: 1. SOUNDS: by accessing this section it is possible to issue one or more sounds to signal my presence and prevent an bear approaches. The type of sound that we thought to use it to trumpet stadium. 2. NOTIFY: by accessing this section you can report very easily by pressing a button, the presence of a bear that I see in my trail. This signal automatically generates a notification to all those who have installed the app on their smartphone for give them the opportunity to see automatically the opening of a map which will indicate the location of the alert and its GPS point in order to understand the distance to the bear. If the notifications is close you are also given the option to see the cellular number of the guy that notified the alarm in order to have the possibility to call the guy and have more details about the area and understand more quickly the way for escape. The same notification must also be automatically sent to one or more e-mails addresses. The notifications remain present in the map for a period to be defined in such a way that, at any time, a user can see the map with the list of GPS points of the notifications. For these functions you must have an active Internet connection. 3. RESOURCES: by accessing this section you can dial emergency numbers in automantico and view tips of behavior, before a walk, if I see a bear or if I am attacked. These are the tecnical detail about the system: 1) After the installation and on the firts run the app verifies the cellular number of the user using the fabric sdk by twitter. 2) A server written in Node.js with a db in mongodb do the following functionality to serve the app: a) It keep a list of all the user registered with theis cellular number and their position (the mobile app notifify of the user position in backgroud and trying to preserver the use of the batteries as much as possibile ) b) when a user send a signal of a bear the server compute the distance for each user on the db and send a push messages with the signaling user mobile number to all the user in the red area (5 km) and a push to all the user in the yellow area (50 km) with only the postion. When the user receive the push and open the app a map will be presented with the signaling postion (and the signalling mobile number) and their own postion. c) present a list of signaling postion when a user open the map to put the signaling on the map d) send an email with the phone numeber and position to a set of destinatary in the case of a signaling. The deliverable are: 1) an app for android (4.x or newer) 2) an app for iOS (only iPhone 7.x or older) 3) a server in node.js with the described above functionality and all the code for the push integrated (no external service to use). The graphics will be fornited by us.