Hello, I read that the smaller version of iPad PRO comes with MS Office pre-installed for free but the 12.9" does not. This is a bit strange. I cannot find such information on Apple's iPAD page. Could users of iPad PRO 12.9" 2017 please confirm? I have Office on my iPhone 6s+. I don't recall paying. I use the Mac version of Office. I have no compatibility issues with other Windows users. How about the iPad PRO version of Office? Is it fully compatible with the Mac and Windows versions? Is it equally good?