Want to know your bowling ball speed? Now you can find out! The speed at which you throw can impact your game score substantially. In addition to measuring bowling ball speed, an average of the last 5 throws is displayed. Estimated bowling ball release velocity, pin impact velocity, and impact momentum are also calculated and displayed. Simply tap the button when the ball is released and tap again when the ball strikes the pins, and an accurate reading will be displayed! What customers are saying: ** This is the easiest calculator for ball speed. No need to calculate time to speed. It's done for you. Keeping average speed is only one of the calculations it does. ** I love this App. It makes it so easy to track your ball speed. ** Simple, yet briiliant! - Simplicity at it's finest! Works perfectly, look forward to comparing performance against the automated tracking system at the IRTC next week during the annual bowling combine in Arlington. ** Cool, now I can actually keep track of my speed as it is actually quite hard to keep consistent delivery for almost every shot you make frame after frame.