License question

Hi everyone,
I use two computers (an iMac and a Macbook Pro) and would like to use Cross DJ on both. Do I need to buy 2 copies or can buy 1 copy and install it on more than one computer?
Thanks
I use two computers (an iMac and a Macbook Pro) and would like to use Cross DJ on both. Do I need to buy 2 copies or can buy 1 copy and install it on more than one computer?
Thanks