One question a day journal this is best app for self-knowledge and self-introspection. Deep questions offline help you know yourself and if necessary, start to change. Random questions are waiting for you. “Know thyself” - says one of the inscriptions on the wall of the temple of Apollo. How often do you think about who you are and what you are? There are many questions to ask yourself. Ask yourself who are you. Ask yourself where are you going. Ask yourself what is the meaning of your life.