The 24-second rule is a basketball game in which the attacking team must complete a shot or shooting motion within 24 seconds of taking control of the live ball. In simple terms, this rule requires the attacking team to complete the attack within a specified time. To effectively help players and referees control the pace of the game, ensure the smooth implementation of the rules, and enhance the game experience, our app has three main features: one click to start/pause the 24-second shot clock and quickly reset the clock to 24 or 14 seconds. Through these features, players and referees can more easily manage the progress of the game, ensuring that each team has enough time to attack, but also to ensure that the game is fair and competitive.