Contact & corrections.
Found an issue with a calculation or an explanation? A short, reproducible example is more useful than personal information.
A useful note starts with a clear example.
- Describe a reproducible example
- Copy the note when ready
- Choose where to share it
How to describe an issue
Include the page path, the result you expected, the result you saw and which date rule you used. Replace real dates with a made-up example that demonstrates the same problem.
For a month-end issue, 2025-01-31 to 2025-03-31 is a useful neutral example. Please do not include a baby’s name, medical history or real date of birth.
Local note, not an online submission
This version does not offer an online contact form or a published support email. The note below only prepares text on your device. Copy it and provide it to the site operator through an existing contact channel, if you have one.
Pressing Copy does not send a message, open a ticket or guarantee a reply. If you have a concern about a child’s health or development, contact their healthcare professional directly.
What happens after I copy the note?
The text is placed on your device clipboard only. No server receives it, and this page does not create a support ticket or provide a delivery status. Keep the note for yourself or share it with the site operator through a contact channel you already have.
If no such channel is available, the note has not been submitted. Do not put a child’s personal dates or medical details into it, and direct individual health questions to the child’s healthcare professional.