My Health and Wellness Diary by The Body Dietetics application allows users to record and share their dietary intake, physical activity, medications and symptoms. No more searching for the exact food you ate, or entering 10 items for a salad, or guessing whats in your burger. You type in the exact ingredients and foods you ate, along with the brand if necessary and save it to the database. If it’s a complicated dish, or something you think your health professional wouldn’t be familiar with, then you can also take a picture of it! 
This app is available from the iTunes App Store.