[header] How to use your smart phone to improve your health [title] Track your daily food intake. [step] One of the easiest ways to improve your health with a smartphone is to track your daily food intake. Writing down what you eat helps you identify unhealthy eating habits, become aware of your daily nutritional intake, and makes you accountable for what you eat. 
Many apps, such as myfitnesspal and mynetdiary, will allow you to input foods you eat. The app will compile a daily total of calories, fat, carbs, sugar, protein, and other nutrients.