If you’re looking for commercially supported alternative languages for iOS
development and Xamarin or RubyMotion aren’t your thing, you might
want to check out mocl, a Lisp compiler built on top of LLVM.
I found this bit about the debugging experience interesting:
With debugging enabled, mocl provides you stack traces that zero in on the
source of errors when they occur. Plus, since mocl generates C/Obj-C code,
profiling tools like Apple’s Instruments work great, helping you measure and
diagnose performance issues, quickly.
(via Hans Huebner)