Cydia - An alternative app store for jailbroken devices.
Bring - Clever shopping - simple and shared
AppRecs - AppRecs sorts through reviews in the App Store and automatically helps you filter out inauthentic results.
Google Shopping List - Google Shopping List is a grocery list and recipe manager app that helps you to get organized and save time.
Fnd - Browse Apple App Store and iTunes on the Web
Yummly - Yummly is a recipe app. You search through lots of recipes, add the ones you like, and even create shopping lists based on the recipes you pick. You can save your recipes with one click and later organize them into collections.