For new iPhoners, the idea of gulping down unlimited swathes of data is just a magical thing of the past, spoken of with hushed tones, in the days before fear of data overages gripped the iPhone universe.
Fear not though, new iPhoner — the tools exist to keep from accidentally punching through the monthly 3G data allotment. Readers who’ve been following our Essential App series (and who live in the States) have no doubt already equipped their iPhones with AT&T’s free myWireless app, which counts and bar graphs data usage; but there’s an even more precise and powerful weapon available: DataMan
For a buck, DataMan will track and log data usage in real time by the day, week or month, and let the user set data-use thresholds at which warnings will be activated to alert the user of overage. It’ll also plot data use on a map, so the user can see data activity hotspots.
The process looks easy — the app’s Store page says it simply requires picking when a billing cycle starts and data allowance, and the app will begin tracking data usage. it also works in the background, and will pop out notifications while using other apps or if the iPhone is locked.
Currently, DataMan is only available for the iPhone 3GS and 4, but support for the 3G is immanent and iPad support will arrive in November.