You can delete a CopyBook household at any time, together with everything it holds. This page explains both ways to do it and exactly what is removed.
Email privacy@copybook.app from the email address the household was registered
with, using the subject Delete my account. We will confirm and complete the deletion within
30 days, and write back when it is done.
All of it, and it cannot be undone.
Nothing is kept back for a retention period. Records are removed rather than marked deleted. Anonymous, non-identifying operational logs may persist briefly in ordinary server logs before rotating out.
If you only want to remove a single child, you can do that in the app without deleting the household — open Settings, then remove that child's profile. Their work and photographs go with them.