The Syrenity App is a mental health app that has been designed to help improve mental health and well-being. The content on the app was created using cognitive-behavioral therapy principles. It uses both active and passive interventions. Active interventions are interventions where the user engages with the app in a back and forth dialogue (e.g., a conversation about restructuring unhelpful thoughts). Passive interventions meanwhile consist of text or videos that the user can read or watch and do not require dialogue with the app.

Those assigned to the waiting list control condition will complete weekly surveys as those assigned to the intervention group but will not have access to the Syrenity platform until after the the 6-week trial period.

Currently, the Syrenity App has two active interventions. One is an exposure-based intervention called "Face your fears." Another is an intervention based on behavioral activation called "Get better." The app also provides self-report questionnaires for tracking mood along with psychoeducation on a variety of topics relevant to mental health.

Depression symptoms will be assessed with the PHQ-9. The PHQ-9 is a 9-item self-report measure that assesses the frequency of symptoms of major depressive disorder as outlined by the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). Response options range from 0 ("not at all") to 3 (nearly every day). Total scores on the PHQ-9 range from 0-27 with greater scores indicating greater frequency of depressive symptoms. A score greater than or equal to 10 on the PHQ-9 has been identified as a positive screen for major depression (Kroenke & Spitzer, 2002). PHQ-9 will be assessed at baseline, and each week of the intervention.

Anxiety symptoms will be assessed with the GAD-7, a 7-item self-report measure that assesses the frequency of anxiety symptoms. Responses range from 0 ("not at all") to 3 ("nearly every day"), yielding total scores that range from 0-21 with greater scores indicating greater frequency of anxiety symptoms. A score greater than or equal to 10 on the GAD-7 has been identified as a positive screen for anxiety in primary care settings (Spitzer et al., 2006). GAD-7 will be assessed at baseline, and each week of the intervention.