The carer companion app requires access to the internet for certain functions, whilst it is possible to check in and out without internet available, no information can be sent or received without a connection.  

It is difficult to predict the amount of data a device will use on a monthly basis, as it depends entirely on usage, the more a carer uses the app and the more they actions they make within a booking will increase the amount of data used.

A carer who has 1 booking a week, that doesn't have any tasks or documents to open will use less data than a carer who has 80 bookings a week, completing tasks, writing notes, logging observations, viewing documents and taking photos as well.