Experimental: Intervention Arm Using the Mobile Cognitive Behavioral Therapy App

All participants will receive the same intervention arm, a mobile cognitive behavioral therapy (CBT) app that includes modules with educational content and teaching and practice of strategies that address the following: education about anxiety and depression and their association with stroke recovery; awareness and monitoring of emotions; behavioral activation, i.e., increasing engagement in valued and meaningful activities; increasing awareness of thinking errors and reframing negative thoughts; mindfulness; relaxation skills; increasing tolerance of anxiety in anxiety-provoking situations; and problem-solving. The application includes an interactive dashboard to provide the user with statistics for tracking progress toward their goals. Participants will be asked to use the application for 30 minutes per day, 2 days per week, for 8 weeks.