Eligibility Criteria:
Phase 1A:
Inclusion criteria:
* PrEP providers serving YMSM from healthcare and community-based organizations located in Los Angeles County or PrEP Navigators similarly employed by healthcare and community-based organizations that deliver PrEP services to YMSM.
* \>18 years of age
Exclusion criteria:
* Not a PrEP provider or navigator serving YMSM from healthcare and community-based organizations located in Los Angeles County
* under 18 years of age
Phase 1B and Phase 2:
Inclusion criteria:
* 16-26 years old
* cisgender male, Trans, gender non-conforming, or identify differently from the gender picked for you at birth
* identify as gay, bisexual, or some other same-sex identity, and/or report having had sex with anyone with a penis during the previous 12 months
* identify as White/Caucasian, Black/African American, Latinx, Asian-Pacific Islander, Indigenous, Native American or mixed-race
* living in the Los Angeles metro area
* have daily access to an iOS/Android smartphone and/or tablet with internet access
* know their HIV status and are HIV negative at time of enrollment.
Exclusion Criteria:
* is younger than or older than 16- to 26-years
* not cisgender male, Trans, gender non-conforming, or identify differently from the gender picked for you at birth
* does not identify as gay, bisexual, or some other same-sex identity, and/or report having had sex with anyone with a penis during the previous 12 months
* does not identify as White/Caucasian, Black/African American, Latinx, Asian-Pacific Islander, Indigenous, Native American or mixed-race
* does not report living in the Los Angeles metro area
* is non-English speaking
* does not have daily access to an iOS/Android smartphone and/or tablet with internet access
* is a person living with HIV
* for Phase 2 only, participants will be excluded if they participated in the Phase 1B focus groups
Phase 3:
Inclusion criteria:
* 16-26 years old
* cisgender male, Trans, gender non-conforming, or identify differently from the gender picked for you at birth
* identify as gay, bisexual, or some other same-sex identity, and/or report having had sex with anyone with a penis during the previous 12 months
* identify as White/Caucasian, Black/African American, Hispanic/Latino/Latinx, or mixed-race
* living in the Los Angeles metro area
* have daily access to an iOS/Android smartphone and/or tablet with internet access
* report having insertive and/or receptive anal sex in the previous 6 months or report a positive STI result in the previous 6 months
* not currently on PrEP and no plan to start/restart PrEP in the following 7 days
* not currently enrolled in another HIV prevention study
Exclusion criteria:
* is younger than or older than 16- to 26-years
* not cisgender male, Trans, gender non-conforming, or identify differently from the gender picked for you at birth
* does not identify as gay, bisexual, or some other same-sex identity, and/or does not report having had sex with anyone with a penis during the previous 12 months
* does not identify as White/Caucasian, Black/African American, Hispanic/Latino/Latinx, or mixed-race
* does not report living in the Los Angeles metro area
* is non-English speaking
* is a person living with HIV (self-reported)
* does not report insertive and/or receptive anal sex in the previous 6 months or does not report a positive STI result in the previous 6 months
* does not have daily access to an iOS/Android smartphone and/or tablet with internet access
* is currently on PrEP or has plans to start/restart PrEP in the following 7 days; and 11) is currently enrolled in another HIV prevention study.