Impact of a Mobile App on Pregnant Women's Prenatal Genetic Testing Decision-making

In the intervention group, participants will be asked to download, register, and review a mobile app on their own mobile phones before their appointment with maternal-fetal medicine specialists. This mobile app includes prenatal genetic testing information about amniocentesis, chorionic villus sampling, nuchal translucency screening, cell-free DNA, triple/quad/penta screening, anatomy ultrasound, and carrier screening.