I can develop native iOS and Android apps using Ruby, because I'm already comfortable with Ruby’s syntax and conventions (I had a lot of years experience in ruby). Compared to native languages like Swift or Java/Kotlin, RubyMotion allows me to be more quickly in development process, especially as a Ruby developer. It also gives me direct access to native APIs, which makes it very powerful for mobile app development.

I loved it was a ruby syntax and based on what ruby developers know. It was easy to understand, but methods and patterns were not exactly the same, but native mobile methods ruby made.

The language. Ruby is one of the best designed languages and CocoaTouch is one of most stables frameworks to develop software applications. Using Ruby to create iPhone applications feels really well.