Clojure iOS Development

There's one more option (warning: haven't tried it yet):
https://github.com/oakes/lein-fruit
This Leiningen plugin translates Java bytecode to native code for iOS. And there's even IDE that has it built-in:
https://github.com/oakes/Nightcode

You can run clojure on iOS by compiling clojure to scheme, https://github.com/takeoutweight/clojure-scheme