This app is used by baseball and softball umpires and base umpires to check ball counts.
The features are that you can change the ball count by scrolling to reduce incorrect operations, and the ball count is displayed large and easy to see.
The button layout is designed to allow one-handed operation, and you can switch between right-handed and left-handed use.

The operation method is as follows.
・You can change the ball, strike, out, and score counts by scrolling up and down the text box with numbers.
・Touch the reset button to reset the ball and strike counts.
・Touch ＆ hold the reset button to reset all counts.
・Touching the hand icon changes the button layout from left-handed to right-handed, or from right-handed to left-handed.