Using their smartphone-based suite of relapse-prevention interventions , Gustafson and colleagues11 conducted an RCT with a sample of 350 adults with alcohol use disorders discharged from 2 residential substance abuse treatment programs and followed them for 12 months. Patients self-initiated access to the interventions 24/7; the type of interventions ranged from being professionally supported EMIs like "ask an expert" which allowed participants to receive personal responses to their questions from addiction experts to a Panic Button which triggered automated reminders to the participant and, alerts to key people (e.g., counselor, sponsor, family member) who may reach out to the participant via phone or in person. Their system was designed to support recovery by promoting autonomous motivation, coping competence, and relatedness.12 Relative to participants assigned to recovery support services as usual, those receiving the support system reported significantly fewer heavy drinking days and were more likely to be abstinent from alcohol at the end of the study.13-15 In addition, this study demonstrated that providing recovery support via smart phones is feasible for this population.