Daring Fireball: “The whole point of Apple’s success with iOS has been the opposite of “write once, run anywhere”. It’s more like “write a version that is specifically optimized for this particular device”.”
This is one of the things I love about Apple. A lot of companies would be fine with slapping some simple mouse based helpers into their emulator, change it ever so slightly so it works on the desktop, and ship it. Apple doesn’t do that. They tune their software for the hardware platform. As it should be.