Not accurate

I not sure if people who wrote reviews here were not paying close attention or what but this app does not report accurate cellular dat usage. I have constantly monitored and compared this app against AT&T app and AT&T app does refresh its usage section and tells the right usage. This app is not working right. First time the date jumped from 62.6 mb to 423.4 mb even though I was on a wifi network. Then it came down to 366.x. It aint worth $2. Spend in some other app if you can.

Saad68 about Data Master - Monitor Cellular & Wifi Data Usage