Integrate with LoseIt! (Meal diary/planner, Calorie counter, etc.)
Loseit! is the next best choice from myfitnesspal. It is almost identical and has a killer android and iphone app that would make it super easy for clients to track their food intake. It even lets you see the macro (protein, fat, carbs) ratio that you are hitting on any particular day!
Ehren Curbelo commented
Loseit! would be a great addition. I've been using it for a long time and prefer it over MFP because it seems a little more user friendly. Works so much better than FitBit for tracking as well.
LoseIt has a feature where you can get your DNA tested and use the results to make sure you are consuming the nutrients that are unique to how your body uses them. We have a few clients who are doing this so LoseIt is the food tracking app that we are recommending. Are you planning to link to LoseIt in the near future?
Nick Deacon commented
Yeah, do this please. Many of my clients prefer it to MFP.