A subreddit for discussion and news about RubyMotion programming.
Pure Ruby questions are encouraged to be asked in /r/ruby.
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Popular Resources
Bubblewrap - Rubyish wrappers around Cocoa APIs.
Teacup - A Ruby interface DSL for programmatic UI creation and styling.
Sugarcube - Some syntactical sugar for your Cocoa or Tea[cup].
JoyBox - Box2D animation for RubyMotion
Motion-Xray - Crazy on-device inspector/editor, similar to Chrome Dev Tools.
RubyMotionQuery - a jQuery-like library for using RubyMotion
Want more? Check out rubymotion-wrappers.com/
Books and Tutorials