Swing meter conveniently skips and jumps out of control even when slow meter balls are purchased( at a cost of over $10 per sleve of three) more often than not causing to hit the ball out of bounds and you lose the ball you just bought. (It's like not only do you lose the ball but a slap in the face at the same time). You need to spend several hundred dollars for balls and equipment if you want to be competitive. All in all i would recomend not even downloading this app. Save your money....