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.