It looks like Python is the way to go if you want to use a scripting language in the mobile world. Python is out for iOS now, although its not free. It looks like it is a bit further along and more polished than the Android version Google has been working on for awhile now. Writing apps in Python over Java or Objective-C would make life much easier. I guess well see how bad the performance hit for using a scripting language in the mobile world is soon.