Understand what your baby is going through, week by week, with CDC and AAP sources cited
Fussy days, sleep changes, new skills: get general guidance for your baby's
age, in language you can actually use.
Your baby's forecast
What this can do: show general guidance for your baby's age. It cannot predict when your baby will be fussy. The eight windows organize research and milestone guidance for the first two years, and exact timing varies.
The family link includes your baby's dates, so they see the same forecast. The image never shows dates, and shows the first name only while the box above is ticked. Everything is made on your device.
Thank you for passing it on
Here is our one-page poster of the whole first year, free. Print it for the fridge or keep it on your phone.
The calculator was genuinely useful. There was a lot of information everywhere, but here I found it all in one place. It saved me a huge amount of time.
IIrinaBeta tester · the free forecast
This service (the calculator and the PDF) was something I needed without knowing I needed it.
AAlexBeta tester · the forecast and a printable guide
I gave it to my parents (the grandparents) and they were very happy with what it said.
FFrankBeta tester · the Grandparents' Edition
Every review comes from a real person. We publish them after a quick check for spam and personal details, critical ones included. Beta tester reviews come from parents who tried Peanutbean before launch.
Printable guides for your baby's first year
Choose a ready-made guide, a personalized map, or the three-guide kit.
50% off every guide until November 30, and you can pay in installments at checkout.
The 50% offer ends November 30
37days11hours21minutes16seconds
About 37 days left. Offer ends November 30.
The development windows organize broad age-based guidance. They do not predict when an individual baby will be fussy.
For any baby, including babies born early
The First-Year Map
A fill-in map for parents who want the whole first year on paper.
11 pages with five development windows and nine rough research landmarks
CDC milestone checklists for 2, 4, 6, 9 and 12 months
Fill-in dates and a one-page fridge summary
Regular price $17Sale price $8.50 USD
50% off until November 30. Pay in installments at checkout. Ends in 37d 11h 21m 16s
$17 USD
Digital PDF · Instant download on Gumroad
Buying for someone else? Turn on "Give as a gift" at checkout and it goes straight to their inbox.
Every claim comes from official guidance, such as the CDC and the American Academy of Pediatrics (AAP), or from published studies. Sources cited, always.
Built for real life
The short answer first. No jargon, no guilt, no alarmism. Easy to use while holding a baby.
Fair to premature babies
Born early? We use adjusted age for milestone context, following AAP guidance. It is a fairer way to read development.
How it works
1
Enter two dates
Birth date, plus due date if your baby came early.
2
See your baby's timeline
A map of the first two years with age-based context for now and the months ahead.
3
Spend less time guessing
See what is common at this age and when to ask your pediatrician.
Clear answers for the questions that come with a new baby.
Made to earn your trust
Peanutbean is new. Alongside the reviews above, here is exactly what you can rely on.
Every source cited
Every claim traces back to the CDC, AAP, NHS, or peer-reviewed research, linked right on the page. See how we check our facts.
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
For babies born early, milestone context uses adjusted age, following AAP guidance.
Used the forecast with your baby? Tell us what you think. We read every note, and with your permission we may share it here.
Peanutbean provides general information for educational purposes only. It is not medical advice.
Every baby develops at their own pace. Always talk to your pediatrician about your child's health.
What's going on?
Struggling to breathe, blue or grey lips, a seizure, or unresponsive?
Call your local emergency service now. Do not keep browsing.
Won't stop crying
Start with the basic checks: feeding, nappy, temperature, clothing, and anything that could hurt. If the cry sounds unusual, your baby is hard to wake, or breathing looks different, get medical help. If you feel overwhelmed, put the baby on their back in a safe cot and step away for a few minutes.
Quick orientation only. The full guide explains the warning signs and links its sources.
38C / 100.4F or higher is a fever. If your baby is under 3 months, call a medical professional now. At any age, get urgent help if your baby is hard to wake, struggling to breathe, having a seizure, or looks blue or grey.
Quick orientation only. The full guide explains the warning signs and links its sources.
Frequent night waking is common in the first year and does not mean you have caused a problem. For every sleep, place your baby on their back on a firm, flat, separate sleep surface with no pillows, bumpers or loose bedding.
Quick orientation only. The full guide explains the warning signs and links its sources.
Spitting up after feeds is common. Get medical help promptly if vomit is green or bloody, vomiting is repeatedly forceful, your baby struggles to breathe, feeds poorly, or has noticeably fewer wet nappies.
Quick orientation only. The full guide explains the warning signs and links its sources.
Many baby rashes are mild, but a rash needs prompt medical attention if your baby also has a fever, feeds poorly, is hard to wake, or seems very unwell. Call emergency services if there is trouble breathing or swelling around the lips or tongue.
Quick orientation only. The full guide explains the warning signs and links its sources.
A red face and straining do not mean constipation if the poo is soft. Hard, dry poo is different. Contact a medical professional if your baby is very young, feeds poorly, vomits, has blood in the stool, or has a swollen tummy.
Quick orientation only. The full guide explains the warning signs and links its sources.
Sore gums, drooling and chewing are common signs. Teething does not explain a fever of 38C / 100.4F or a baby who seems very unwell, so do not assume a new tooth is the cause.
Quick orientation only. The full guide explains the warning signs and links its sources.
A yellow tint in the first week is common. Get medical help promptly if it appears in the first 24 hours, or if your baby is hard to wake, feeds poorly, has dark pee or pale poo, or is becoming more yellow.
Quick orientation only. The full guide explains the warning signs and links its sources.
Put the baby on their back in a safe cot, leave the room for a few minutes, and ask another adult to take over if one is available. If you think you may hurt yourself or the baby, call your local emergency service now.
Quick orientation only. The full guide explains the warning signs and links its sources.
Wanting to be held is common in young babies. Contact sleep is only safe while the adult stays awake. Never fall asleep holding a baby on a sofa or chair. For sleep, use a firm, flat, separate surface and place the baby on their back.
Quick orientation only. The full guide explains the warning signs and links its sources.
A repeated fussy stretch in the evening is common in young babies, but the pattern is not a diagnosis. Get medical help if there is a fever, breathing looks different, your baby is hard to wake, or feeding has changed sharply.
Quick orientation only. The full guide explains the warning signs and links its sources.
Newborns can grunt and squirm during active sleep. Get urgent help if grunting happens with every breath, the ribs pull in, lips look blue or grey, there is a fever, or your baby is hard to wake.
Quick orientation only. The full guide explains the warning signs and links its sources.
