Level Up Your Batting Stats Instantly

In just a few seconds, you can set up a stand with your iPhone's camera and a tripod. Perform advanced hitting data analysis to obtain instant data on Exit Velocity, Launch Angle, and the player's biomechanics. This will help you quickly assess your hitting performance.


Batting Partner On the Go

No matter where or when, all you need is a tripod and an iPhone to set up easily and swiftly. The AI will analyze advanced data for every batted ball, turning your iPhone into a training partner that's with you at all times. Assess and replay your performance whenever you want.


Master the Key Numbers

Visualized hitting data, including exit velocity, launch angle, and player's biomechanics, are presented intuitively. Make data user-friendly and easily understand hitting metrics. Adjust your sports performance in real-time, continually improve, and reduce the risk of sports injuries.


Follow Star Performances Anytime

Stay updated on your favorite sports stars and track their performance. Set goals to surpass your favorites.


Collect All Swing Visualizations

Through AI analysis, the b4-app automatically records and saves every spectacular hitting moment based on batting events, ensuring you don't miss any exciting swings.


With the b4-app, you can instantly access advanced batting metrics, fine-tune your sports performance in real-time, and continue to improve scientifically.