Amazing data tracker but...

This app is amazing had it since the relase of iOS 6 and never went over my data. Now that after the iOS 7 update the app doesnt track unless you open the app. The badge says 49 percent used and once I open the app it jumps to 67 and I have background refresh on too. Hopefully this will get fixed .

Delusion92 about Data Usage Pro, v5.0