Your clients can integrate the Trainerfu app with MyFitnessPal. Once they do that you can see their meal log right inside your trainer app.
Here is what your clients need to do:
Make their MyFitnessPal diary public
Copy their MyFitnessPal Username
In their Trainerfu app, go to More > Meal Log.
Select Connect MyFitnessPal.
Paste their MyFitnessPal username in the input field.
Click Connect. That's it.
Now Trainerfu will start pulling your client's MyFitnessPal meal log in the Trainerfu app. You can now review their meal log in your news feed or client's diary.