A free app for Android, by Alessandro Boggiano.
Calcolo Zona is a tool for people following the Zone Diet to track their food intake, weight, and body composition. It helps to stay in the zone and it calculates everything you need to know in order to follow the rules.
Calcolo Zona is a handy tool to calculate your lean mass, fat mass, and block requirements of your body. You can also track your weight and monitor your progress over time.
It will help you to get a better idea of what you should eat to stay in the zone. It will also be useful to calculate the amount of food you need to consume to stay in the zone.