Lullaby is an educational and reference app designed to support parents in soothing their babies to sleep and improving their sleep patterns. The app provides optimized bedtime schedules tailored to each individual, based on the actual time the baby falls asleep. It also automatically adjusts the next "sleeping schedule" according to the baby's actual sleep time. In addition to sleep-related records, Lullaby allows parents to manage other aspects of childcare, such as feeding, milk intake, and bathing. The app offers free access to daily "sleeping lessons" curated by doctors, as well as the option to consult with sleep consultants for personalized advice. Lullaby aims to help parents establish healthy sleeping habits for their babies and improve their overall sleep quality.