I disagree completely about the swift thing. It may look a bit like Javascript on the very surface, but it's a whole different thing, if you know Javascript you know zero Swift ( except for syntactic sugar in the lambdas and declaring simple variables ).
Having said that, IMHO your best shot to get something done now would be Titanium or Phonegap.
Cheers.
Ps: Stay away from Swift until it's solid and there are more learning resources.