It a cloud based develop broad. You can use any device which can view the web page to develop the program. You can use your PC, mac, iPad, iPhone or android etc.
It is a soft defined hardware. The behavior of the extension IO can be change whatever function you want. All the functionality can be redefine by changing the configuration of the broad.
All the extension IO is ESD protected. So touch the IO pin is save and won't break the hardware.