This looks very promising, but are there any examples of real applications written with RubyMotion and submitted to the AppStore? Everything I see is just stand-alone examples, but can all the pieces be glued together and turn into a functional app?
And second, maybe this is a dumb question, but is there any possibility that Apple blocks apps submitted using third party tools like this?
There are apps written in MacRuby (RubyMotion's desktop sibling) in the Mac App Store, and there are apps written in other alternative languages in the iOS App Store, so it's hard to see what the problem would be. The RubyMotion FAQ agrees with this assessment.
Apple doesn't care how you write your apps (well, they'd probably prefer you used their tools), and they've come out and publicly stated they have no problem with things like RubyMotion, Corona, Adobe Air to ObjC conversion, etc.
And second, maybe this is a dumb question, but is there any possibility that Apple blocks apps submitted using third party tools like this?