Catch It is a joint project between the Universities of Liverpool and Manchester, to help users better understand their moods through use of an ongoing diary. The app was designed to illustrate some of the key principles of psychological approaches to mental health and well-being, and specifically Cognitive Behavioural Therapy (CBT). It is not intended to be a substitute for professional mental health care, therapy or advice. If you are worried about any aspects of your mental health, you should approach a professional.