Understand what your baby is going through this week
Fussy days, sleep changes, new skills: see what's likely happening in your baby's development, in language a tired parent can actually read.
Based on published research · every source cited · adjusted age for babies born early
Your baby's forecast
Backed by real research
Every claim comes from published studies and official pediatric guidelines. Sources cited, always.
Made for 3 a.m.
The short answer first. No jargon, no guilt, no alarmism. Readable with one hand while holding a baby.
Fair to premature babies
Born early? We use adjusted age, so the forecast actually fits your baby. Most tools skip this.
How it works
Enter two dates
Birth date, plus due date if your baby came early.
See your baby's timeline
A personal map of the first year: what's happening now and what's next.
Stop guessing at 3 a.m.
Know what's normal, what's coming, and when to ask your pediatrician.
Made to be trusted at 3 a.m.
Peanutbean is new, so instead of invented testimonials, here is exactly what you can rely on. As real parents send us their words, they will appear here.
Every source cited
Every claim traces back to the CDC, NHS, AAP, or peer-reviewed research, linked right on the page.
Honest about the unknowns
Where the science is not settled, we say so on the page instead of pretending. Windows, not verdicts.
No account, no cookies, no ads
Use the whole forecast without signing up. Cookieless analytics, so no banner, and nothing about you is sold.
Fair to babies born early
The forecast runs on the due date, the way pediatricians do, so premature babies are measured fairly.
Used the forecast with your baby? Tell us what you think. We read every note, and with your permission we may share it here.