Get data from any food and weight tracker (weight, calories, protein, carbs and fat consumed) like MyFitnessPal or FatSecret. For those who go to the gym only calories is not enough, quality of that calories makes much more value.
Going to forget about FatSecret for now, as there hasn’t been enough demand, and they currently don’t have any mechanism for their users to discover 3rd party services.
What about FatSecret? They have the same functionality.