MLB.com has relaunched its MLB.com at Bat iOS app for the 2012 season as a single free universal app for both the iPhone/iPod touch and iPad, implementing in-app subscriptions for paid features. In prior seasons, MLB provided separate apps for the iPhone/iPod touch and the iPad, sold individually for $15 each, requiring fans to either choose to use the app on a single platform or purchase both individually. The 2012 version of the app is now…
