Are you an ambitious tennis player who owns not only one, but two or even more rackets? Then you know the problems that come up when you open your tennis bag after a one or two week break and start questioning yourself: Which racket should I choose? Which has the latest stringing? When and in with which string tension were they last strung? And, and, and... This app helps you to keep track of when and how frequently you string or let string your rackets. You can add several rackets to the data