Smartphone apps have the potential to overcome obstacles to getting mental health treatment to those who need it most. The purpose of this study is to evaluate the potential of individual smartphone apps to reduce symptoms of depression and anxiety, and improve wellbeing, in breast cancer survivors. The apps are designed to target the root causes of depression and anxiety symptoms and wellbeing. Through simple exercises, each app teaches scientifically proven skills, such as those to manage negative thoughts or increase positive emotions. To learn more, click the topic pages in the header above.​