Ruboto apps can be developed using JRuby, MRI or Rubinius. The Apps created thereafter depend on JRuby (jruby-jars) at runtime to provide full access to Android's Java APIs. Installation is straight-forward and easy. Please read the Requirements.
Ruboto has a command-line interface which lets you complete common tasks quickly and painlessly.
Use Ruby to access the Android API and test your apps.
Deploy to your device or simulator quickly. Even without terminating the process.