If you go to turbcrank.com it will give you all the particulars. It's a inexpensive $20.00 program that you can download onto your laptop. It's all I need or want. As I indicated earlier, you'll need a HRM and cadance monitor on your bike. All the other things available were either to expensive and or complicated for me. Someone else on our forum recommended it earlier this fall when the topic of trainers came up.