Inclusion Criteria:  Male at birth Self-identify as cisgender male Ages 18-29 years Self-reported Black race ≥1 male anal sex partner in the 12 months before the baseline interview Not currently taking HIV PrEP Able to complete survey instruments in English Live in the Atlanta MSA and not planning to move from it over the next 2 years Owns cell phone with data service Willing to download a health-related app to their cell phone as part of the research study Able to provide ≥ 2 means of contact Not currently enrolled in another HIV prevention clinical trial Confirmed HIV-negative at baseline visit  Exclusion Criteria:  Female at birth Individuals < 18 years of age or > 29 years of age HIV positive status Does not report Black as race No male anal sex partner in the 12 months before the baseline interview Currently taking PrEP Does not own mobile phone with data service Not willing to download a health-related app to their cell phone as part of the research study Live outside the metro Atlanta MSA and/or planning to move from Atlanta area in the next 2 years Not able to complete survey instruments in English Currently enrolled in an HIV prevention or treatment clinical trial Adults unable to consent Individuals who are not yet adults (infants, children, teenagers) Pregnant women Prisoners