"Pregnancy Friends" APP is a maternal and infant APP with the content of changes during pregnancy as the core, and also has mood sharing, prenatal check-up records, and pregnancy gadgets as its main functions. It is a full-process assistant specially created for pregnant people to record every mood during pregnancy. Physical health status, reminder of prenatal check-up time, real-time understanding of mothers physical and emotional changes during pregnancy every week, grasp of babys development, and feel every step of babys growth.