A difference of degree that is not as big as Android fans think. Apple doesn't impose its will all that often (you see headlines each and every time it happens), and Google imposes its will more often than we notice (you see headlines occasionally and often after the fact). Both are large corporations trying to make money. The key difference between them:
Apple: Makes money by selling devices and services to the end user. The end user is their customer, and that's who they try to please.
Google: Makes money by selling your information to advertisers. The end user is the advertiser, and that's who they try to please. You may think you are Google's customer, but you are really their product being sold.
Seriously?? Apple doesn't even allow flash.