Android SDK vs. Grails vs. Geddy

Android provides a rich application framework that allows you to build innovative apps and games for mobile devices in a Java language environment.

Grails is a framework used to build web applications with the Groovy programming language. The core framework is very extensible and there are numerous plugins available that provide easy integration of add-on features.

Geddy is a full stack open source MVC framework based on ruby on rails methodology with built-in authentication module, passportjs and socket.io integration.