Retention in an mHealth App Aiming to Promote the Use of HIV Pre-Exposure Prophylaxis Among Female Sex Workers in Dar es Salaam, Tanzania: Prospective Cohort Study.

"None declared."

"This research was funded by the Research Council of Norway through the Global Health and Vaccination Programme (GLOBVAC; project number: 285361). The project is also part of the European & Developing Countries Clinical Trials Partnership (EDCTP2) program supported by the European Union. The technical development and operation of the Jichunge app was carried out by Sveve AS (Teiealleen 28, 2030 Nannestad, Norway), and we would like to acknowledge Ivar Moen and Ole Habberstad for their technical support throughout the research process. We extend our sincere thanks to Inga Haaland, Hanne Lichtwarck, and Willhellmuss Mauka for their efforts and support during fieldwork for this study. Finally, we thank all study participants, fieldwork assistants, and clinic staff for their contributions to this study."

"Trial Registration Pan African Clinical Trials Registry PACTR202003823226570; https://pactr.samrc.ac.za/TrialDisplay.aspx?TrialID=9781"