The eAlarm crisis app is an alert medium. That means that the registered app users receive important and critical alert messages via this app. Thanks to these notifications, the users can be informed immediately in a case of emergency and/or crisis. The user has also the possibility to send predefined answers / feedbacks to the alarm central, so that the central knows in realtime what is going on with the users. Furthermore, the app also allows to store important documents for the user (e.g. evacuation plans), which also can be used offline.