I looked at page and could not figure out what it is. Is this a server-side html generator? And AJAX library? A native iOS control library? I guess I will never know.
The posted article does nothing to describe what it is about to an average person who will wander into it. Most people have no idea what is rubymotion, and which problem it solves, or why they should care. Having read up on it now, I suggest to try this instead:
Rubymotion is a toolchain for ruby developers to create native-looking, native-performing, AppSore-compliant iOS apps. Formotion is a RubyMotion library that provides for declarative UI layout description, making for much faster UI development. At long last, Ruby devs can create first-class iOS apps as quickly as they can create first-class web apps.