XVision has released an update to DataMan, its real-time data usage tracking app for iOS devices. DataMan allows iPhone users to keep track of their Wi-Fi and cellular data usage. Users can view usage by date and time and location and even plot usage on a chart or a map and set alerts to be notified when data usage exceeds certain daily, weekly or monthly thresholds. Version 5.2 adds a new “App Watch” feature that allows users to track usage on a per-application basis so they can see which of their apps are using the most data. The new App Watch feature supports not only third-party apps but also built-in apps and services such as Siri and iCloud. DataMan Pro requires iOS 5.1 or later and is available from the App Store for $1.