Content within AEM Mobile is device specific (Phones or tablets) not platform specific (iOS or Android). Content is organized within Projects and a project can be published in both an Android App and an iOS app. If you want to segregate the content between the two platforms, you'd actually have to have 2 separate projects - one for iOS and one for Android. So, you publishing process would be twice as much work, even though you'd only have to develop the content once.
Hope this helps.
Tommy