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A baby tracker that knows your country's vaccination schedule

1 September 2026 · 6 min read · by Aleksandr Zhadko, developer of Rostik and dad of two

Almost every baby tracker logs feeds, naps and nappies. Almost none of them know what a two-month-old is due in your country. That gap is small until you move, or until someone asks whether the 12-week appointment has been done — and then it is the only thing that matters.

Rostik carries twelve national childhood vaccination schedules plus the WHO international one, each showing the authority it came from, and picks the one for the country you are in. This page explains why that is harder than it sounds and what it actually gets you.

Why one schedule is not enough

Childhood immunisation schedules are national, not universal. Countries agree on which diseases to protect against and then disagree, quite reasonably, on the timing. Compare the first year in two countries that are three hours apart by plane:

United KingdomSpain
First appointment8 weeks2 months
6-in-1 / hexavalent8, 12, 16 weeks2, 4, 11 months
Pneumococcal16 weeks, 1 year2, 4, 11 months
MenB8, 12 weeks, 1 year2, 4, 12–15 months
MenACWYnot in infancy4 and 12 months
Measles, mumps, rubella1 year and 18 months12 months and 3–4 years
Rotavirusroutine, 8 and 12 weeksrecommended, funding varies by region

None of these is wrong. They are different national answers to the same question, built on different disease patterns and different health systems. But a family that moves from London to Valencia when the baby is seven months old now has a child who is mid-course on one schedule and being read against another — and the person who has to hold both in their head at the appointment is the parent.

Schedules are also revised. The UK added an 18-month 6-in-1 booster for children born from July 2024 and moved to MMRV for children born from January 2025; Spain approved its 2026 common calendar in December 2025. An app that hard-codes one country's schedule from three years ago is worse than no app.

What Rostik actually does with this

The vaccination schedules and the illness guide are free. The diary is free for the first five entries, then a subscription with a 7-day trial.

Who this is genuinely for

Families raising a child away from where they grew up. This is the group nobody builds for. You know the schedule of your home country by heart and none of it applies. Rostik is in eleven languages precisely because of this: the parent and the health system often do not share a first language.

Parents with two calendars in play — a child born in one country and now living in another, or a family that splits its year.

Anyone who has ever stood at a desk and been asked "and when was the last one?" and had to say they would check at home.

Who it is not for

Being straight about this is more useful than a feature list.

The honest limitation of any schedule feature

A published national schedule is a plan for a healthy child on time. Real children run late, catch colds on appointment day, have medical reasons to delay, or move mid-course. Catch-up rules are their own discipline and they belong to a clinician, not to an app.

What software can do — and what is worth having — is make sure that when you walk into that appointment, the dates are in your hand instead of in a drawer.

Common questions

Which countries' schedules are included?

Twelve national schedules — the United Kingdom, United States, Canada, Australia, Spain, Germany, France, Italy, Portugal, Brazil, Mexico and Russia — plus the WHO international schedule as a fallback for anywhere else. Each one names the authority it came from.

Do I have to pay for the vaccination schedule?

No. The schedules and the childhood illness guide are free to use. The diary itself is free for the first five entries and then needs a subscription, which starts with a 7-day free trial.

We moved country. Does the app restart the schedule?

No. You change the country and the schedule is recalculated against your child's date of birth, so what is already done stays done. Real-world catch-up decisions belong to your doctor — the app's job is to put the dates in front of you before that appointment.

Does it tell me which vaccine my baby should have?

It shows what the published national schedule lists for your child's age and country, with a link to the source. It is not medical advice and it does not know your child's history of exemptions, delays or medical conditions — your doctor does.

Does it send reminders?

Yes, alongside the rest of the day — sleep, feeds, walks. The point is that the next vaccination date lives in the same place as everything else, instead of on a card in a drawer.

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Sources

Rostik is a parental logging app, not a medical device. This page is general information, not medical advice — for concerns about your baby speak to your doctor or health visitor.