[georgemcbay]

I agree it isn't really any extra cognitive burden. I've yet to meet anyone capable of using any touchscreen UI who wouldn't be able to seamlessly switch between iOS/Android UIs. The amount of cognitive burden required for using ANY new app is far greater than the tiny bit of extra that may be added due to switching between app UI styles, IMO.

Having said that, and speaking as an Android user/developer, I am always annoyed when an Android app I am using is very clearly an iOS port and still retains the iOS look & feel. This annoyance isn't coming from added cognitive burden or a fanboy-type perspective but probably from a design perfectionist/hipster perspective.

It just seems.... rude, I guess, to not follow the local cultural norms (though I do get why it is done for expediency).