Inclusion Criteria:  Inpatient psychiatric patients who have attempted suicide (lifetime) or have documented suicide ideation and a plan to harm themselves at admission Understand written and spoken English Own an iPhone with iOS 11 or higher, or Android with OS 8.1 or higher Willing and able to complete enrollment procedures Parent/guardian (and youth) able to understand the nature of the study and provide written informed consent (assent for youth) Willing to agree to release of information to their parent/guardian and providers when clinically indicated. Discharge plan includes aftercare within the Hartford HealthCare system (to facilitate coordination of care during follow up)  Exclusion Criteria:  Patients with active psychosis Patients experiencing substance withdrawal Currently enrolled in other treatment studies for the symptoms and behaviors targeted Patient unwilling or unable to wear mask during in-person study procedures Patients who, in the judgment of the investigator, would have an unfavorable risk/benefit profile with respect to the Smartphone App. Any other psychiatric or medical condition (e.g., intellectual disability) or custody arrangement that in the investigator's opinion would preclude informed consent/assent or participation in the trial.