I am a big fan of Mono but you can also use C++ on the iPhone when compiling to g++ with one Obj-C wrapper. That is currently the most productive because of al

I am a big fan of Mono but you can also use C++ on the iPhone when compiling to g++ with one Obj-C wrapper. That is currently the most productive because of all the existing code that can be ported. Obj-C you can only use on the iPhone and Cocoa really which is a platform lock. With Mono the sky is the limit but it is still not directly native like C++. For mobile and especially mobile games, native is winning.