I need and want to emphasize that the use of this app is on your own risk!

The Fat-Protein-Units and absorption time calculated by this app are based on the recommendations of nutrition scientific articles, see list of links on this page. The app calculates FPUs by taking the total calories of a food item and substracting the calories based on carbs (4 kcal/g). The difference represents the calories based on fat and proteins. For more details, please refer to the chapter on the absorption scheme.

What you will do with this calculation, is completely up to you - you act on your own risk! Although I have thoroughly tested the calculation algorithm (and use it for a pump based insulin therapy in my own family), I refuse to guarantee its correctness.