Keep it simple! At first glance the setup might sound a bit complicated, but you can be sure it’s easier than converting a match ball!

Usually the smartphone attachment to the fence just  requires a disposable rubber band and a pen. What you always need though is someone or something to hit balls with you. This can be either a tennis wall or a tennis partner, with whom you can also share the coach. It doesn’t matter where you play, as long as there is a good internet connection.