MyFitnessPal (free - IAP) is an app that tracks nutrition and exercise.
Food Planner (free - IAP) is an app that offers users a simple way to find and plan future meals. It comes in 8 different languages and provides interesting sorting features.
BigOven (free - IAP) is a good app for ideas, organization, grocery lists, planning, and using leftovers.
Pepper Plate (free - no IAP) is a simple recipe finder and planner.
Eat This Much
Eat This Much is a meal planning app that helps people automatically create meal plans that meet their dietary goals. You can check out the demo links to learn more. How It Wor...