Five peaks
Southern peak 南嶽 衡山
Where it is
The forehead. It is matched with Mount Heng.
What the books said
오악은 오른쪽 광대뼈·왼쪽 광대뼈·이마·턱·코를 각기 동·서·남·북·중으로 잡아 거기에 태산(泰山)·화산(華山)·형산(衡山)·항산(恒山)·숭산(嵩山)을 배치한다.Our rendering: The encyclopedia assigns the right cheekbone to the eastern peak and the left cheekbone to the western peak.
面部有五岳之位，額為南岳衡山，屬離火。頦為北岳恆山，屬坎水。左顴為東嶽泰山，屬震木。右顴為西嶽華山，屬兌金。鼻為中嶽嵩山，屬中央土。Our rendering: This book assigns the left cheekbone to the east and the right to the west. That is the opposite of the encyclopedia above.
남악인 이마가 평평하지 못하고 뒤로 누운 것같이 넘어지면 패하는 수가 많고, 가세가 길지 못하다.Our rendering: This is what the literature said about the forehead. We do not apply it to any face.
중국에서는 오악 가운데 이마가 좋은 것을 크게 치지만 우리는 턱이 좋은 것을 최고로 친다.Our rendering: Even for the same spot the traditions part ways. This is not a field with one settled answer.
What this app does not do
It gives no score, sets no grade, builds no ranking, and never compares you with another person, a celebrity or an animal. It does not settle anything about your fortune, your work, your money, your health or your lifespan. It quotes what the books said, and it does not apply those words to you.