RecruitingBehavioural interventionMiREA-AC for Reducing Problematic Alcohol and Marijuana Use in College StudentsThe goal of this STTR Phase I funded study is to address the urgent need for an effective primary prevention approach to the problem of heavy episodic drinking and cannabis misuse among mandated college students. Smartphone app interventions are expanding and can offer accessible, scalable, and cost-effective tools. The study will be used to attune a successful evidence-based mHealth smartphone (SP) application (MiREA-AC) focused on alcohol and Cannabis misuse by college students with enhanced content to promote health-seeking behaviors. To test and disseminate the adapted prototype (MiREA-AC), a multisite pilot trial will be conducted to obtain data on the intervention's usability and feasibility in modifying alcohol and cannabis use.