Milestones are a range, not a date

«At 6 months» means around 6. Two healthy babies can be weeks apart on the same milestone, and both be doing fine.

Development Babies and early childhood Updated 2026-09-05

At 2 months

At 6 months

At 12 months

If they were born prematurely, the age that counts is the corrected one: an 8-month-old born at 32 weeks is compared with a 6-month-old.

A late milestone is not a diagnosis

What's looked at is the whole picture, and that development keeps moving forward. A baby can be late on one and early on another.

What is worth raising with the paediatrician without waiting for the next check-up: development that stops, or losing something they already did.

In NomiNest this isn't a table, it's your baby

The app works from the data you already log, and compares your baby against themselves rather than against an average.

Meet NomiNest

Sources. Milestones based on the World Health Organization's development standards. NomiNest does not assess development.
NomiNest is not a medical device and this guide does not replace your paediatrician's guidance. The information is general and orientative: every baby is different, and the professional who sees yours is the one who knows them.