How we check every health fact
Syncry tells parents what their own health service says: when each vaccine is due, which check-up comes next, what to register and by when. This is how we make sure it is right, and how you can check it yourself, together or on your own.
In short
- Every clinical fact rests on two independent official publishers that say the same thing.
- We keep the exact sentence from each official page, so you can read it for yourself.
- Every Monday a program re-reads every quoted sentence and flags any page that changed.
- Anything we cannot back yet stays hidden, and the national guidance stands in.
What is checked today?
The most recent sentence was read on its official page on 12 October 2026. These numbers are counted from the registry each time this page is built.
21 facts are held back today because they lack a second source. Until they have one, the app shows the national guidance instead.
What counts as an official source?
A government health department, an official bulletin, a public health service or public hospital, or the national paediatric body that publishes the official vaccination calendar. A blog, a forum, a newspaper or another app never counts.
Why two publishers?
One page can carry a typo or an old edition. When a health department and a second, independent publisher say the same thing, the fact is far less likely to be wrong. Two pages of the same publisher count as one. Paperwork facts, such as a deadline or the name of a benefit, need one official source.
What a checked fact looks like
One fact from the registry, as every page shows it: the claim, the publishers, the date, and the sentences behind it on tap.
Checked against World Health Organization (WHO), UNICEF, checked on 11 October 2026
“This table summarizes the WHO vaccination recommendations for children. The ages/intervals cited are for the development of country specific schedules and are not for health workers.”
World Health Organization (WHO), read on 11 October 2026“National schedules should be based on local epidemiologic, programmatic, resource & policy considerations.”
World Health Organization (WHO), read on 11 October 2026“You can get the national immunization schedule of your country from your doctor or the Ministry of Health’s website.”
UNICEF, read on 11 October 2026“To find out when your child should get their measles vaccines in your country ask your doctor for the national immunization schedule or check the Ministry of Health’s website.”
UNICEF, read on 11 October 2026
What happens when an official page changes?
Every Monday the check opens each page, including PDFs and the cells of calendar tables, and looks for each quoted sentence. When one has gone, the pages that rely on it say "being re-checked" until a person has read the official page again, and the content changes only after that. Nothing updates itself.
What this is not
Syncry is not a clinician and does not replace one. These facts are cross-checked by reading official sources, not reviewed by a doctor, and we say so. Your midwife, health visitor or paediatrician comes first, and if something feels wrong with you or your baby, call your health service or your emergency number.
Every official body we use, by country
Questions parents ask
Can I see the source for a fact?
Yes. Under each fact the publishers are named with the date it was checked. Tap the line to read the sentences we quoted and open each official page.
How do I report a mistake?
Write to support@syncry.app with the page and what looks wrong. We read the official page again and answer you.
Does a doctor review these pages?
No. Each fact is cross-checked against official publishers instead, and re-read every week. Your own midwife, health visitor or paediatrician always comes first.
Your own dates, kept current
Syncry turns these checked facts into your family’s own calendar: each vaccine and check-up dated from your baby’s birthday, a reminder the week before, for both of you or just for you, and a note when an official source changes.