Last updated: July 2026
Master Math is a multiplication, division, addition, and subtraction practice app for children, set up and managed by a parent or guardian. We designed it to collect as little information as possible. This policy explains what we collect and how it is used.
You can use Master Math entirely on a single device with no account. In that mode, all player profiles and progress are stored only on your device and are never sent to us.
If a parent chooses to create a family account so progress syncs across devices, we store:
We do not collect children's email addresses, real names, photos, location, contacts, or any other personal information.
Account data is stored on Cloudflare's infrastructure and is used only to provide the app's sync and progress features.
Master Math is intended to be set up and managed by a parent or guardian. We follow a parent-managed, no-child-PII model consistent with children's privacy laws such as COPPA and GDPR-K. Destructive profile changes are protected by a parent PIN.
You can delete an individual child player (and its progress) at any time from inside the app. You can also permanently delete your entire family account directly in the app: open the Parents area (protected by your parent PIN), choose Delete account, and confirm with your password. This immediately and permanently erases your account and all associated data — the parent email, every child profile, and all learning progress — from our servers. This action cannot be undone. If you prefer, you may instead contact us at the email below and we will remove your data for you.
Questions or data requests: support@mastermathkids.com