I am not a type of diary writing, but mobile and Kindl I've always there. The food diary to keep going fast and motivated immensely. The information on E-additives, vitamins, etc. were for me at the beginning just gimmicks, but now I am very interested in nutrition and use them well.
Great app, I can recommend it to everyone!
PS. I've now been forty Killo taken and use the app still to control.