Android tablet, screen size will be limited to 8 inches or more. People who are playing or teaching volleyball in sports boy clubs and club activities. . . There are various data analysis apps, but this app is also compatible with practice games that you do many sets a day, and by quantifying your own play, you can look back and improve. Please feel free to use it because it is a free app. The items that can be quantified are the success rate of spike decision rate, spike effect rate, serve, block, reception, and dig.
VB Data
