The Development of a Mobile-based App to Increase Uptake of Pre-Exposure Prophylaxis (PrEP) by Men Who Have Sex With Men in China

"The mini-app (used in Part 2) has four main functions:~1. a knowledge center that contains a series of HIV-, sexual health-, and PrEP-related educational articles in Chinese;~2. an HIV self-test toolkit ordering system that allows users to order a finger-prick HIV rapid test toolkit and shipped to home for free (one piece at a time);~3. an asynchronous message function that allows users to chat with a study staff (C.Li); and~4. a user profile page where users can manage all HIV test orders."