Clinical or gimmickal: The use and effectiveness of mobile mental health apps for treating anxiety and depression.

Research into the effectiveness of mental health apps is lacking, and the majority have no evidence of efficacy. Clinicians need to be aware of what apps have such evidence and should exercise caution when recommending apps to patients. Suggestions are offered on the direction of future research, including an appeal to further include clinicians in the development and efficacy testing of mental health apps.