“Pregnancy Due Dates - Tracker, Milestone, Progress” is an app designed to be used by woman who currently pregnant or health practitioner such as midwife, obstetrician, or doctor during antenatal care visit. There are a lot of features in the “Pregnancy Due Dates - Tracker, Milestone, Progress” app, namely calculation of estimated due date (EDD), gestational age, and current progress of the pregnancy. Calculation can be based on the first day of last menstrual period, conception date, or ultraso