Goalkeeper change caller for a 5/7 friendly soccer match.
"Change GoalKeeper" is a simple application that allows you to manage shifts in the football goal during a friendly soccer game without goalkeeper fixed. Just set the players list, the turn duration, the time required to make a gk change and then you are ready to start the application. At the end of the turn you will hear a horn sound so you do not have always to check the clock. The application still allows you to see the gk order, temporarily lock or skip a goalkeeper.