I've never see that for mobile app

Isn't that would be nice, an app that you with the scan of code bars have the calories of the cookies that you are eating and calculate if you ate two cookies how much you have eaten and, add to the rest of what you ate during the day, that show you how much you ate in calories, and inform you that you could ate to keep the weight, of loose weight, or if you are gain weight, and how fast, making graphics of your consume during days, so with the graphics we trace if you gain weight or loosing, and sugest you menus based in the bar codes of the food you consume, make menus that includes the food you have to consume to have a balanced diet, calculate by estimation in what time you gonna got to the weight that you object, like the rate of fat, carbohidrates, vegetables, sugar, make some analizes based in databases what kind of diet you are making and the causes to your healthy, and plus++ they say to you how much of exercise you need to do and give you a list of exercise that you can make to loose the weight that you consume, using also the idea that the persons have the basal consume of energy, and also compare the graphics of consume of calories and lose of calories with exercise and also monitorize you during the exercise changing your daily calories insume and spent. Rute Bezerra de Menezes Gondim