Child safety & acceptable use

• No chat, messaging, comments, friend lists or public profiles — children cannot contact or be contacted by anyone.
• No advertising, no behavioural tracking, no third-party analytics on any screen a child can see.
• Children never enter an email address, phone number, real name, photograph or location.
• Children sign in only with a picture and a parent-chosen 4-digit code, on devices the parent has approved.
• Repeated wrong codes temporarily lock sign-in, and new devices need a parent's email approval.
• All questions come from a fixed, curriculum-mapped question engine — no open-ended AI or user-generated content can reach a child.

Parents and children must not:

• share one child profile between several children, or share a parent account with other families;
• try to copy, scrape or republish the questions, lessons or videos;
• probe, attack or interfere with the service, or bypass device approval or the sign-in lockout;
• create an account for a child you are not the parent or legal guardian of;
• use the service for anything unlawful.

We may suspend or close accounts that break these rules, after warning where practical.

If anything on Mathidia Junior ever worries you or your child, email support@mathidiajunior.com with the subject "Child safety". Safety reports are prioritised and acknowledged within one working day. If a child is in immediate danger, contact your local emergency services first.

See also the children's privacy summary, the privacy notice, the AI policy and the security & incident response policy.