A typical user of this App might be an elderly grandmother who is a tourist in China. During her visit, she begins to suffer from some ailment, such as diarrhea or headache. After she finds a nurse, she may use this simple easy to use App to indicate to the nurse what the ailment is.
Though not Medical advice, this App may help a traveling English speaking person to communicate with a Chinese nurse or doctor. A Chinese character which indicates the body part which is suffering, is listed alongside the English translation for that body part.
On the body view, the red coloration indicates the area of the body which is having trouble, sickness or pain.