Disease Prevention

The goal of this clinical trial is to learn if CareMom, a mobile app-based cognitive behavioral therapy program works to prevent perinatal depression among Chinese mothers. The main questions the trial aims to answer are: 1. Does CareMom lower depression scores after an 8-week intervention? 2. Does CareMom lower depression scores at 6 weeks after childbirth? 3. How satisfied are participants with CareMom? 4. What unfavorable events, if any, are associated with the use of CareMom? Researchers will compare CareMom to a matched attention control (a mobile app-based program that offers participants a similar level of interaction and daily activities) to see if CareMom works to prevent perinatal depression. Participants will: 1. Engage in the CareMom program or a relaxation training program every day for 8 weeks 2. Complete a series of online questionnaire tests before and after the 8-week intervention. 3. Report any discomfort experienced throughout the study period.