Weight Diary is an app that records and manages weight (weight). If you record your weight (weight), based on the record, BMI, calendar, chart, etc. You can check weight change information. *BMI - If you enter gender, height, and weight, BMI is automatically recorded. - If you record your weight afterwards, your BMI will be changed to the newly entered weight. - BMI value is measured as follows. 1) Underweight: less than 18.5 2) Normal: 18.5 or more and less than 23.0 3) Overweight: