Are you looking to add that Rocket Fire behind your Fastball and gain 5-10 mph on your velocity?
Rocket Arm Pro - Throwing Baseball Heat is the followup to "Pitching Hand"! Learn the exercises and workouts and pro pitchers use to throw heat. Filled with detailed pictures, workout sessions, and descriptions. This app is not only great for pitchers but any baseball player looking to put a little something extra on their throws.