Just stopped working

Stopped updating a few days ago. When it was working, it seemed to accurately track data usage, but 9 days into the month, Id used 13% of my data plan. The app predicted my total usage for the month, with 22 days remaining, would be 16% of my plan. Id like to try the upgraded features, but I dont want to pay for an app that cant do simple math.

dhjimmyjam about Data Monitor - Manage Data Usage in Real Time