Life Graph for Android is based on a simple idea from numerology but it attempts to show you something rather grandiose. Specifically, it predicts the level of life energy that will power different periods of the person's life. Life energy is somewhat similar to Ying and Yang in Chinese tradition. When the graph goes up, towards levels 8 and 9, life energy becomes very Yang and the person spends a significant amount of time in the outside world, doing something that is visible and recognized by everyone. This kind of graph was often used to try and predict when the person will marry: supposedly, when the graph is high.
Operating System Android