iOS: GroceryTrip makes building shopping lists from recipes and other webpages and documents you've clipped to Evernote easy. The app takes your tagged items, consolidates duplicates and sorts items by aisle or section of the store.
Evernote is great for all sorts of tasks, but if you use it for shopping lists, GroceryTrip can make it much much easier. Simply tag a recipe you want to make with "grocerytrip," and the app will automatically scan all of your clippings, extract the ingredients for those recipes, and organise them into a shopping list you can refer to on your phone. It's that simple -- all you have to do is tag the recipes you want to make, and then add the extra things you want to pick up (or start a document and tag it appropriately).
The video above shows you how the app works. Since it integrates so heavily with Evernote, it's ideal for people who already use Evernote for recipes and shopping lists. Hit the link below to take a look. It's $2.99 in the iTunes App Store.