Babies do not grow in straight lines. They sprint, plateau, sprint again. A growth tracker that understands that is the difference between confidence and panic in the first year. One Baby is designed to keep your eye on the trend, not the day.

Each entry is plotted against the WHO Multicentre Growth Reference Study percentiles, with an option to overlay the IAP curves used by Indian paediatricians. You can see your baby’s position relative to their own previous entries, not just a global cohort — because the most useful comparison is usually a baby to themselves.

The tracker is quiet by default. We do not send daily reminders. We do not flag a normal reading in red. We surface a soft prompt only when a sustained pattern looks like it could be worth a chat with your paediatrician.

The growth tracker pairs naturally with the cry analyzer and sleep prediction features, building a single calm picture of how your baby is doing.