Screenshots of the PrEP mini-app.
The original mini-app interface is in simplified Chinese only. English translation is provided here for international readers’ interpretation. Reprinted from Li et all [The initial prototype of the PrEP education mini-app was developed through a Gay-Friendly Doctor Finder Hackathon [The PrEP mini-app was password-protected to restrict access solely to participants in the intervention arm. The mini-app was able to collect the aggregate numbers of daily visits, but was not able to track individual user information or activity. Use of the mini-app was at participants’ discretion or preference. However, the study team sent weekly reminders via WeChat text messages that encouraged participants to use the mini-app. After Week 8, participants in the intervention arm no longer received reminder messages but could continue using the mini-app throughout the remainder of the study period.