So you would like to analyze and improve your baseball game without a personal coach? The Smash Pro Sports Baseball Swing Analyzer might help. It attaches to your softball or baseball bat and records your swings. You will be provided with swing speed, time to impact, bat path angle, and more. The companion app provides you with 3D simulation of your swings.
Thanks to this tool, you will be able to view your performances on your iOS or Android device. Costs under $130 at this time.