Meet the Diamond SwingTracker: a smart baseball and softball tracker that helps you improve your game. It combines with your iOS device to capture your 3D swing plane / path and lets you compare your swings with others. Users will be able to keep an eye on speed, control, and power metrics.
3D drills and training content are available to improve your game. An online interface is available to create custom leaderboards. The SwingTracker sets you back under $100 at this time.