After reading this: <a href="https:&#x2F;&#x2F;medium.com&#x2F;@harrycheung&#x2F;mobile-app-performance-redux-e512be94f976" rel="nofollow">https:&#x2F;&#x2F;medium.com&#x2F;@harrycheung&#x2F;mobile-app-performance-redux...</a><p>I found the free packet a little bit to late in the market.<p>Anyone from RubyMotion dev maybe can explain way is so slow, and I should use it instead of robovm, swift, xamarin, etc.