Yes, you can currently snag a data usage tracker for iOS, but if you're wanting to know exactly which apps are sapping your monthly data, then Onavo Count is where it's at. The free app just debuted in the App Store, which allows users to pinpoint the most data hungry titles with a handful of lovely graphs. Like other apps, Onavo Count will help you from exceeding your monthly allotment by tracking your last 30 days of mobile data usage, and if you really want to geek out, you can even break it down by week. Not to stop there, the app is also integrated with Onavo Extend, which compresses unencrypted data in order to help users squeeze a bit more from their data plan. If your interest is now piqued, be sure to hit up the video after the break, or simply head over to the App Store, where you can snag it for yourself.