My husband has recently been diagnosed with diabetes and the main reason for diabetes was his wrong eating habits. I have heard about calorie calculator, which helps in counting the daily calorie intake, and calorie count in different food items. Before buying it from store, I want to know if it is easy-to-use and how does it function. I would also like to know if it is available online. I would really appreciate if somebody can share his or her experiences and reviews related to food calories calculator as well. Thanks.