Questions Diary is an Android application developed by PIONE STUDIO, available for free in the Lifestyle category. As the name suggests, it is a diary app that asks you one simple question every day. The questions are thought-provoking and help you reflect on your life. For instance, "Are you happy right now?", "What were you thinking about the most today?" or "What do you think is the purpose of life?".

The app stores your answers on a server, which can be accessed from anywhere. After one year, you will be asked the same questions again, and you can compare your answers. The app's interface is user-friendly, and it can be used by anyone who wants to explore their inner selves. With this app, you can find your answers quickly, hand-written in a diary, and reflect on them whenever you want.