Just updated Grocery Ninja to fix a couple of bugs, and add more Ninja sounds. Also, there's a new feature to allow you to confirm your voice entry items before they are finalized to the list.
BTW: the new update may "expose" some empty list items at the bottom of your grocery list. Don't worry: they're harmless! These empty items were being created as a result of a bug that I just fixed, so they shouldn't happen anymore. Hopefully you don't have any, but IF YOU DO, just go ahead and delete them. I've been using the app for over a month now, and only had 5 of these blank entries, so it shouldn't be too big a deal to clean up. Sorry about that!