The thesarvo app is now available for Android here:
https://play.google.com/store/apps/details?id=com.thesarvo.guide
It's got basically the same functionality as the iPhone / iPad one:
It's free in the Play Store for the time being as it's in beta.
It runs on Android 4.0+, which should be all recent decent Samsung, HTC & Google phones.
It's been written by Karl Malakoff based off a proof of concept I did earlier in the year. Karl's done a great job of running with my half arsed job, providing some needed motivation and time, and turning it into something releasable.
We are keen to hear feedback on bugs and improvements, add them here in the comments or log them on github here: https://github.com/jonnermut/thesarvo/issues
And if you're looking for the ipad / iphone version, thats here: thesarvo iPhone App Now Available