Good idea, but you got the categories wrong. Normal weight is a BMI of 18.5 to 24.9, underweight is under 18.5, overweight is over 24.9, and obese is over 30. Im not fat btw, I just know enough about measuring BMI to know that this is totally wrong! A BMI of 14.2 is not "healthy" it is severly underweight! If you correct this issue, then I would be happy to use this app because the format is great.
Aero_lover16 about Teen BMI (Find out how your WEIGHT, HEIGHT and BMI compares with others of the same age)