스마일리더 is an educational and reference app designed for iPhone users. The app offers a detailed menstrual cycle calendar to help with systematic pregnancy planning. Users can input data to predict menstrual cycles, ovulation dates, and fertile periods. It enables efficient pregnancy preparation by tracking changes in the user's body.

Real success stories from users who have experienced pregnancy are available for curious individuals. Instead of searching individually on online forums, users can find firsthand accounts of successful pregnancies all in one place through 스마일리더.

For prospective fathers, the app provides a wealth of information necessary for the journey to parenthood. From curated content like 'Smile Honey Information' tailored to one's pregnancy weeks and baby's age to a shared couple's diary for capturing memorable moments, 스마일리더 aims to assist dads-to-be comprehensively.