This Depression Test is designed to help you evaluate the severity of your depression with just nine simple questions. This app uses the Patient Health Questionnaire (PHQ-9), an empirically-based, self-test questionnaire. Clinical depression is a mood disorder in which feelings of sadness, loss, anger, or frustration interfere with everyday life for weeks or longer. Clinical depression generally responds positively to treatment, so it is important to seek treatment if you are concerned about your mental health. New Feature: Keep your results private with a passcode lock! DISCLAIMER: This self-test is not meant to be a diagnosis for your depression. Remember that this app should not be used as a replacement for professional treatment or guidance. -- Want more? Depression Test is one of six components of an application suite called MoodTools. MoodTools aims to create a free, convenient, and easy-to-use Android smartphone application suite that provides empirically-supported tools to combat clinical depression on a large scale.