Why RubyMotion?

Hello, I open this discussion because I would like to know why I should choose rubymotion? My main activity being the creation of surveillance software for children, I would like to offer my services on android.
The problem is that there is no documentation on rubymotion …
For example I would like to access the storage of notifications to be registered by the system and make my application invisible on the android desktop, the latter being probably asked by parents wishing to spy on their teenager.

This is translate with translate google (french)

You can use any of the existing Java APIs out there with RubyMotion. So in essence the existing Java documentation out there will work. Which Java based framework were you thinking of using? Once you have even a small piece of sample code. I can help you translate it to Ruby.