Thanks to Uwe Dauernheim you can run Erlang on iOS devices. I’ve tested it on my iPad and it worked great. So checkout the respositorys at Erlang-Embedded or Uwe fork. Your iOS device needs to be jailbreaked in order to run Erlang.
Download pre-compiled binaries
See this post: http://www.burbas.se/2011/04/12/download-erlang-for-ios/