Log and view data used per device over time
It would be great to see the data used by each device on the network over time. There does seem to be usage logging already on the usage section of the app. Having this broken down by device would be very helpful to have.
Even better would be the ability to query hourly, daily, weekly, monthly or custom date range stats. This would help to find out which member of the family is hogging all the data and when. But maybe that's too much to ask for. Just having the usage per device that could be reset like the current usage stats would be a great start.