@elorimer Thank you for that, I will give it a go and so how it can be applied to this use case.

For clarity, my Provider allows me xGB of data over a defined period. Ideally, it would be nice if a countdown could show how much data is left for that period. Or, more basically, a count of the actual data used over the period versus the amount of data available. The period start and end times being definable.

EDIT: SMS/eMail sent as a warning at a threshold/daily