"The Nourish Food Label Scale" and "The Kitrics Nutritional Scale" weight your foods and simultaneously calculates the amount of 10 key nutritional elements: Calories, Calories from Fat, Carbohydrates, Protein, Fat, Saturated Fat, Fiber, Sugars, Cholesterol, Sodium.
The app is used primarily as a reference to find food and drink codes and allows you to search food by keywords.
Scales and full manuals available on the manufacturers web site:
http://greatergoods.com