Development and Pilot Testing of a Mobile Health Application to Improve HIV Prevention and Substance Use Treatment Service Access Among Women Involved in the Carceral System

Inclusion Criteria

Inclusion Criteria: * 18 of years of age or older * Self-identified woman * Previous experience (past six months) with the carceral system (jail, prison, on parole or under supervision) * Speaks and reads English * Self-reported negative HIV status * Indicates at least one HIV risk (i.e. any of the following in the past 6 months or in the six months prior to the most recent incarceration that call for consideration of PrEP as per the CDC risk indices: have engaged in condomless sex; have an HIV-positive sex partner; have had an STI; have had multiple \[\>6\] partners; have engaged in transactional sex; have injected drugs, shared injection or drug use preparation equipment, or have been enrolled in opiate substitution therapy because of IDU; previous overdose) * Self-report using opioids in the past six months or six months prior to the most recent incarceration (prescription or not) OR self-report using medications for opioid use disorder in the past year. * Have access to the internet through some device - smart phone, computer or tablet (personal or at community location such as library or organization) Exclusion Criteria: * Under 18 years old * Does not read or speak English * Does not identify as a woman * Has been diagnosed with HIV * Does not have previous experience with the criminal legal system within the last 6 months * Does not have HIV risk in last six months or six months prior to being incarcerated * Has not used opioids in past six months or six months prior to being incarcerated or MOUD in last year * Does not have access to internet * Cannot provide informed consent