Live streaming MLB games, every day, over 3G. That is all.
Actually no, it's not: There are also plenty of video highlights, plain old text news, push notifications when games begin or end, and live audio for every regular season game.
Lite: Free, Full: $10
From the App Developers: Watch live games on your iPhone and iPod Touch. MLB.com At Bat 2009 offers fans 1-2 live streaming games per day.