I have been using WAYGO alongside other apps that do similar translations and have found that WAYGO is the one to use whenever we are at a restaurant staring at a menu blankly. The translations are less literal and make ordering much less scary.
Hint: If you have multiple iOS devices to install this app on after purchasing the upgrade, you will want to go into settings and "upgrade" on each of your other devices. You will then see a RESTORE feature in the top right. Tap it and as long as you have in app purchases enabled it will upgrade the new device.
keegoib about Waygo - Chinese, Japanese, and Korean Translator, v6.03