Just download the SplitChainer and use it as much and as long as you want for free.

SplitChainer is a Square Dance rotation program. It comes to you with a handbook explaining in detail how to operate it.
Just one additional remark, which is not present in the handbook: The size of the menuFont can be changed in der BAT- and SH-Files. If it is to small or TOO LARGE, just edit and change the corresponding file.