Yes, an online connection is necessary to be able to use all functionalities to their maximum potential. It is not strictly necessary to use a mobile subscription, because FacilityApps is a native app and therefore also the most important functionalities also offline. The processed forms, tasks and more are stored locally encrypted and if there is a WiFi connection again, all data is synchronized. Particularly in modern buildings, cellars and remote areas, the connection is sometimes lost. With FacilityApps, the work can always continue.