RostikA calm baby diary —
on the circle of the day
Sleep, feeds and walks on one dial. Forecasts for when the next nap is coming, health and illnesses by age, one shared diary for the whole family.
Everything parents need — in one place
Rostik learns your own baby's rhythm and turns entries into hints.
Circle of the day
The whole day on one dial: sleep arcs, feeds, walks. The rhythm is visible at a glance.
Smart forecasts
“Nap in 15 minutes”, “time to feed” — built from your entries and age norms, with reminders.
Health & illnesses
43 childhood illnesses by age with a watch / doctor / urgent traffic light. Illness tracking and a summary for the doctor.
WHO growth
Weight, height and head circumference on WHO curves with percentiles. Vaccines on your own country's schedule.
Solid foods
What to introduce and when, a food checklist with reaction marks — a rash or an upset tummy won't get lost.
Milestones with photos
First smile, first step — a diary of moments with photos that stays with you.
One diary for the whole family
Mum logs a feed and dad sees it instantly. A grandparent and the nanny join by invite link, each with their own role.
Common questions
Is Rostik free?
The app is free to download. The illness guide and the vaccination schedules are always free. The diary gives you 5 entries to try, after which it needs a subscription that starts with a 7-day free trial.
Whose vaccination schedule does Rostik show?
Twelve national schedules: the United Kingdom, United States, Canada, Australia, Spain, Germany, France, Italy, Portugal, Brazil, Mexico and Russia, plus the WHO international schedule. You see your own country's, and each one names its source.
Can two parents share one diary?
Yes. A partner, a grandparent and a nanny join by invite link, each with their own role: the carer role logs care only, the viewer role changes nothing. Entries appear for everyone instantly.
Is there an Android app?
Not a separate one yet. The web app at app.rostik.app opens in any phone browser and holds the same diary.
What languages does Rostik speak?
The interface is in 11 languages: English, Russian, Spanish, German, French, Italian, Portuguese (including Brazilian), Ukrainian, Polish, Romanian and Turkish. The illness guide is in seven of them.
What happens to the data?
It is stored in the EU under GDPR. There is no advertising and no third-party tracking. The account and every entry can be deleted from inside the app in one tap.
Where do the “time to nap” forecasts come from?
From your own entries and age-appropriate wake windows. They estimate one baby's rhythm; they are not a clinical judgement.
Does Rostik replace a doctor?
No. It is an informational assistant for parents, not a medical device. If warning signs appear, contact your doctor or health visitor; in an emergency call your local emergency number.
Start your diary today
The first forecasts appear after just a couple of entries.