What development tools are you using?  I'd be surprised if Android is less of a jump for you than iOS.  From what I gathered from the developers at my last company who were working on Android, it forces you to define UI layouts in XML and implement your application logic in Java.  And if you're doing anything with audio you'll need to use the native bridge to load C/C++ libraries, because Java is not fast enough to do any real audio work.  And that's a pretty convoluted technology stack…  I suppose the audio part doesn't apply to this project though…  In any case you can write applications for iOS without having to learn Objective C and go about it the Apple specific way…  If you use Juce for example (http://www.rawmaterialsoftware.com/juce.php), you can write applications for both iOS and Android in C++…