RecruitingBehavioural interventionGathering Online for Dialogue and Discussion to Enhance Social SupportThe goal of this trial is to test a modified mobile health intervention (with a group component) relative to a mobile health intervention in a two-arm randomized trial with up to 500 young women who are human immunodeficiency virus (HIV)-negative and who misuse alcohol. The expected outcomes are to: (1) determine the efficacy of the virtual group component in reducing alcohol use and sexual risk and increasing pre-exposure prophylaxis (PrEP) utilization; and (2) understand selected outcomes for implementation. Participants will be randomized to receive either the mHealth app or the mHealth app plus the group component, and followed up at 3- and 6-months post-enrollment.