Playing ping pong without a partner is not a lot of fun. The Butterfly Amicus Prime is a table tennis robot that can give you plenty of practice without a human partner. It is controlled via an iOS or Android app. The robot is capable of sending up to 120 balls per minute with different spin, speed, trajectory, and placement.
The Amicus Prime robot comes with 20 pre-programmed drills to improve your skills. You can sequence together drills so they run one after another or randomly.[where to get it]