eSTEP: An Integrated mHealth Intervention to Engage High-risk Individuals Along the Full PrEP Care Continuum

Inclusion Criteria: * 18 years of age or older * Assigned male sex at birth * Current male \& MSM identity OR transfeminine (woman, transgender woman, or non-binary) identification * Self-reported HIV-negative status * English-speaking (since the pilot intervention will be developed in English) * Owner of an Android or iPhone mobile device and access to this phone during the 6-month study. * Willingness and ability to attend HIV prevention visits at the HIV treatment and prevention clinic. * Consent to allow study team access to study-relevant PHI * Eligible for PrEP following CDC guidelines (in the past 6 months had a sexual partner with HIV with unknown or detectable viral load, inconsistently used condoms, and/or was diagnosed with a sexually transmitted infection) * Has never used PrEP or has not used PrEP in the past 3 months Exclusion Criteria: * Was a Community Advisory Board Member or participant in the eSTEP focus groups * Assigned female or intersex at birth * Living with HIV * Already taking PrEP * Under 18 years old * Does not own a mobile phone * Does not speak or read English (since the pilot intervention will be developed in English)