Wondering what is using up your data plan? Or your wifi?
"What's My Data" is a free app that will show you a pie chart detailing that information, as well as a detailed list.
You can choose to see Mobile, WiFi, or both.
You can also choose to see the last hour, day, week, or month.
Refresh button will show you up-to-the-second results.
9Apps 4.9
