Have you checked out my FREE Cals & Macros app? It's a calorie and macronutrient calculator that lets you track what food you've eaten daily (with an emphasis on calories, protein, carbohydrates and fat), track your daily body weight changes and take progress pictures for each day, create custom foods, recipes and meals and share them on Facebook! Oh yeah, it also lets you export all of your data straight from the app and more!
To use this MyFitnessPal export to CSV tool, you must have a MyFitnessPal diary, and it must either be set to public or you must be logged into it if it is private. If you'd like to make your diary public, go to your MyFitnessPal Diary Settings, select "Public" under "Diary Sharing", and then click "SAVE CHANGES".