For ordering, I've used the Waygoapp. It works with both Android and Iphone, does live translations, and works offline. As a point of reference, I used this app when I ate out with my Japanese friend. Her reactions to the menu translations ranged from sufficient to pretty good. We both noticed that it works best with printed text. Handwritten text gives the app some struggles.

When I saw your post I initially thought you were asking about guide services. Just in case you are interested, I recommend Tokyo Free Guide. Its a free local guide service in Tokyo. They assign you a local volunteer guide that matches your interest. You pay for transportation and food. I had good experiences from my guide, especially with food. I still contact my guide, now friend, for food recommendations whenever I pass through Tokyo.