SL4A vs Ruboto on Android Application Development

Question

I am thinking about creating apps on Android using JRuby (or a suitable variant of Ruby for Android).

According to my research there are two current projects that suppor

Answer 1

Mirah, by the developer of JRuby, already with some production apps, is appropriate for Android. One can use the Android API directly while mentally converting the Java syntax as you do so to 'almost-Ruby', whose syntax it 'stole'. It adds no library files (instead, compiler syntax plugins are used) and it has literally exactly the same runtime speed as Java. So it features performance, zero footprint and ideal API access to Android.