5 Alternatives For Developing Native iOS Apps
Nerval's Lobster writes "]The simplest way to join the ranks of iOS developers is to learn Objective-C and/or Swift (the latter, while not quite ready for prime-time upon release, has gotten a lot better with its recent v1.2 update). But for everybody who doesn't want to go down that route, there are other ways to create native iOS apps. Over at Dice, David Bolton went through five alternatives: Xamarin, Codename One, Embarcadero C++ Builder/Delphi XE/AppMethod, RemObjects C#/Oxygene, and DragonFireSDK. (Three of the systems, excepting Rem Objects C# and DragonFireSDK, are cross-platform, as well.) His conclusion? "There's no shortage of systems for developing native apps for iOS and other platforms, but cost will most likely determine your choice. Other than the annual Apple developer fee, creating in Swift and Objective-C; with regard to [these alternative] platforms, Embarcadero is the most expensive."
Also RoboVM if you'd like to leverage your Java skills. Allowing you to target Android and IOS.
http://www.javaworld.com/article/2836880/java-ios-developer/robovm-beckons-java-8-programmers-to-ios.html