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 a smartphone app program to reduce symptoms of depression and anxiety, and improve wellbeing, in breast cancer survivors. Activities in the app are designed to target the root causes of depression and anxiety symptoms and wellbeing. Through simple exercises, the 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.​​