sigterm has Data Usage (iTunes Link) for the iPhone, iPod Touch, and iPad in the iTunes App Store for FREE (regularly 99-cents) for a limited time.

sigterm also has Data Usage Pro (iTunes Link) for the iPhone, iPod Touch, and iPad in the iTunes App Store for $1.99 (3.99 – 50% oqff) for a limited time.

Data Usage monitors cellular (3G/4G/LTE/Edge/GPRS) and Wi-Fi data usage real time from your device.

Set data quota and billing cycle information and let Data Usage worry about making sure you don’t pay for overages again.

App runs in background periodically, shows used, remaining or predicted % as application badge and sends you alert when you exceed specified usage level.

With this most precise tool, you are always in control of data plan limit and save hundreds or thousands on data overages.

The Pro version offers unlimited custom counters and the ability to create one for tracking roaming usage or pre-paid usage or billing cycles that are not monthly or weekly or to track cellular downloads. You can also set data quota and billing cycle information and let Data Usage worry about making sure you don’t pay for overages again.