Free MLB At Bat 13 Baseball App Subscription for iPhone, iPod touch, and iPad or Android

Multi-platform live audio access for At Bat 13 subscribers (portable to Mac/PC with a valid MLB.com account)
Universal support for At Bat 13 subscribers, accessible on iPhone, iPad and supported Android phones and tablets
Sortable batting, pitching and fielding statistics
Classic games library
Re-architected navigations
Additional push notification options
Closed captioning availability for live video

Watch the Free MLB.TV Game of the Day or access your MLB.TV Premium subscription to watch every out-of-market game
See key plays and pivotal moments from every game with Live Look-Ins (No blackout restrictions)
MLB.TV Premium subscribers can access watch archives of every game from the 2013 seasons on-demand
Home and away radio broadcasts
In-progress video highlights
Enhanced, re-designed Gameday pitch-by-pitch features, including realistic ballpark renderings from all 30 MLB parks
Condensed Games
Breaking news, standings, schedules and stats

At Bat offers several subscription options for access to At Bat 13:

At Bat 13 Subscription Options

One-time annual fee of $9.99 for the entire 2013 season.
Monthly recurring fee of $2.99.

Requirements: Compatible with iPhone: 3GS, 4, 4S, 5 iPod touch: 3rd, 4th & ,5th generation, and iPad. Requires iOS 5.0 or later.