The Fortune telling application predicts the future by observing the movements of the moon, planets and stars. Astrology of the stars can be used to interpret the divination of love and marriage, and so on.
Astronomy and astrology are two different things which has separated from 17th century. Astronomy is a science which studies stars and the universe but astrology predicts the feature based on the star positions. Nowadays astrology is not excepted by some people and they think that it is superstitions.
Some know divination a part of the astrology which predicts the future based on the star positions on the birthday, but divination has some other kinds like the numbers, colors, names and other things.