looks like the people at Docomo have released a new live translation app. it seems to be a paid service so we will be testing it on our trip next year.

http://www.japantoday.com/category/travel/view/docomo-introduces-jspeak-translation-app-for-travelers-to-japan

https://play.google.com/store/apps/details?id=jp.co.nttdocomo.interpreterphone3.global1