I think it's important to project yourself as 'something specific'. What I mean by that is if you attempt to broaden your search and throw everything onto your resume then it will not come across as a focused application. You will get passed over in favour if specialists on most occasions.
By all means have several versions of your resume - perhaps one that brings out your iOS experience that you use for iOS jobs. Another for a different specific focused tech stack or area.
Happy to help you revise your versions if you want to send an e-mail across.
I would love to get some advice on this, as I am still clueless.