Our policy on children

Last updated: 13 August 2026.

Children play our games, so the project's first rule is a simple one: we collect no data about children at all. This page explains how that works. It's short.

The account belongs to a grown-up

A parent or another adult creates the account, using their own email address. Children register nothing, and there is no such thing as a child account here — a child has no login and no email address anywhere in our database.

A child enters nothing about themselves

The games have no "what's your name" and no "how old are you" fields. A child only solves problems. We don't ask for a name, surname, age, gender, or date of birth, we don't ask for photos, and we don't record where anyone is.

We don't know how old the child is, and we don't need to: the game picks the difficulty from the answering pace. Quick and correct answers move the ladder up; when it gets hard, the steps get smaller.

What does get saved

Only learning progress: which math steps have been mastered, how many problems were solved, and how fast the answers come. Those numbers are attached to the grown-up's account, not to a child's identity — nothing in them says who the child is or where they live.

What the site does not have

No advertising and no data collection for it. No chat, no comments, no messaging between players: a child talks to nobody and sends nothing to anybody. No public profiles or leaderboards with names. No in-game purchases — there is nothing to buy and no way to pay.

For parents

Everything stored lives in your account and is yours to control. Write to hello@dad4kids.com from the account address if you want to see everything we hold or delete it along with the account. We'll delete it, and we won't try to talk you out of it.

You can also skip the account entirely: progress then stays in the browser on your device and never reaches us.

The full details are in the privacy policy.