Can you run RPG maker vx on a iPad?

The ipad along with the iphone use Apples iOS. There are currently 4 different version of that OS. You would have to check with the manufacture to see if it has produced a version of RPG maker vx for that operating system.

It's the same issue with going from Windows to Mac. The operating systems work completely different, so while both support the same programing languages, the execution of the programs work differently.

Same goes for other mobile platforms like Windows Mobile, Android, BlackBerry and any of the Symbian flavors.

It's possible someone has created what is called a 'port' of the program.

A 'port' is a program originally designed for one operating system and has been adapted to run on another operating system by someone other than the original manufacture.