The Studio

Our due date calculator uses the standard Naegele's rule, the same method used by OB-GYNs worldwide. It estimates your due date by adding 280 days (40 weeks) to the first day of your last menstrual period. While no calculator can predict the exact day of delivery — only about 5% of babies arrive on their estimated due date — it provides a clinically reliable window for planning.

Wake windows are the stretches of time your baby can comfortably stay awake between naps. Getting them right is one of the most impactful things you can do for your baby's sleep quality. Too short, and they're not tired enough to fall asleep easily. Too long, and they become overtired — which, counterintuitively, makes sleep harder. Our calculator uses age-based ranges from pediatric sleep research to give you a personalized window.

Growth percentiles compare your baby's measurements to other children of the same age and sex. A baby at the 40th percentile for weight, for example, weighs more than 40% of babies their age. It's not a grade — what matters most is that your baby follows a consistent curve over time, not that they hit a specific number. Our Growth Interpreter translates these clinical numbers into a clear, reassuring narrative.

Most healthcare providers recommend having your hospital bag ready by 35–36 weeks of pregnancy. This gives you a comfortable buffer in case baby arrives early. Our Hospital Bag Builder provides a curated, minimalist checklist that saves your progress to your device — so you can check items off gradually over a few weeks without feeling rushed.

No. Every tool in the Studio is built using standard clinical guidelines and peer-reviewed research, but they are designed for informational and educational purposes only. They are not a substitute for professional medical advice, diagnosis, or treatment. Always consult with your pediatrician, OB-GYN, or midwife for decisions about your health and your baby's health.