PRIVACY POLICY

1. OVERVIEW

Mental Math Master Society ("we", "us", or "our") respects your privacy. This Privacy Policy explains how we collect, use, and protect your personal information when you use our website and application (the "Service").

2. INFORMATION WE COLLECT

We collect the following types of information:

• Account information: Your name, email address, and authentication data when you register.
• Usage data: Lesson progress, scores, XP, game completions, and activity timestamps.
• Payment data: Subscription tier and billing status. Payment card information is processed securely by Stripe and is never stored on our servers.
• School membership data: If you are part of a school plan, your school association, teacher assignments, and student roster information.
• Agent profile: Your chosen codename and a permanent 6-character agent code, which other agents use to add you to their network. Your real name and email address are never shown to other students.
• Social and challenge data: Your friend connections, challenges you send or receive, live match results, and leaderboard standings.
• Availability data: The time you last signed in, and — while you are actively looking for a live match — the fact that you are waiting in the match lobby. This is used only to pair you with a rival and to tell agents in your own network that you are available to play. It is never shared with anyone outside your network, and it is not location data.
• Device and app data: If you use our iOS or Android app, basic device information needed to deliver the app and, if you turn them on, push notifications.
• Device or other identifiers: An advertising-measurement identifier stored on your device or browser by the Google Ads tag. See section 4B.

3. HOW WE USE YOUR INFORMATION

• To provide and maintain the Service, including lesson progress and gamification features.
• To process subscription payments and manage access levels.
• To enable teachers and school administrators to track student progress within their organization.
• To send notifications about challenges, friend requests, and system updates, by email, in the app, or as a push notification if you have enabled them.
• To match you with an available rival for a live challenge, and to show agents in your own network when you are available to play.
• To improve the curriculum, features, and user experience.
• To measure whether our Google ads lead to new accounts and subscriptions (see section 4B).

4. DATA SHARING

We do not sell your personal data. We share information only in these cases:

• Within school plans: Teachers and school admins can view progress data for students in their organization.
• Payment processor: Stripe handles payment processing securely. We only store subscription status, not card details.
• Service providers: We use hosting and analytics providers that help us operate the Service.
• With other agents: Agents you have added to your network can see your codename, your challenge results against them, and whether you are currently available for a live match. Other agents can find you only if you give them your agent code.
• Leaderboards: Codenames and scores may appear on leaderboards within the Service. Real names and email addresses are never shown.
• Google (advertising measurement): A device or browser identifier and sign-up, subscription, and contact-form events, as described in section 4B.
• Legal compliance: If required by law or to protect our rights.

We do not show advertisements inside the Service, and we never share student names, email addresses, progress, or scores with advertising networks or data brokers.

4A. MOBILE APPLICATIONS

Our iOS and Android apps collect the same information described above. Any presence or availability signal is sent only while the app is open and in use, and stops when you close it or switch away. Push notifications are optional and can be turned off at any time in your device settings. We do not access your contacts, photos, microphone, or location.

4B. ADVERTISING MEASUREMENT (GOOGLE ADS)

We may advertise the Service on Google to reach parents, teachers, and schools. To measure whether those ads work, our website and our iOS and Android apps include the Google Ads conversion tag, provided by Google LLC.

• What is shared with Google: An identifier the tag stores on your device or browser, your IP address, basic device and browser information, the page being viewed, and whether one of these actions happened: creating an account, starting a paid subscription, or sending our contact form.
• What is never shared: Names, email addresses, codenames, lesson progress, scores, challenge results, or any other student work.
• How it is used: Only to count how many sign-ups and subscriptions come from our ads. We do not show advertisements inside the Service, and we do not use this data to target ads to students.
• Google's use: Google processes this data under its own privacy policy at policies.google.com/privacy. You can manage ad personalization at adssettings.google.com.

5. DATA RETENTION

We retain your account and progress data for as long as your account is active. If you cancel your subscription, your progress data is preserved in case you re-subscribe. If a school plan lapses, student accounts remain linked to the school but must subscribe individually to regain access. You may delete your account at any time. See "How to delete your account" at the top of this page.

6. CHILDREN'S PRIVACY

Our Service is used by students in school and family settings. We do not knowingly collect personal information directly from children without parental or school authorization. School and family account holders are responsible for managing student access. We do not display advertisements to students, we do not use student data for ad targeting, and we do not sell data to third parties. The only advertising-related data that leaves the Service is the measurement data described in section 4B.

Students are identified to each other only by a chosen codename, never by real name or email address. Students cannot be discovered by searching — a connection can only be made when one student shares their agent code with another. Parents, teachers, and school administrators may review or request deletion of a student's data at any time.

7. SECURITY

We use industry-standard security practices to protect your data, including encrypted authentication, secure payment processing via Stripe, and role-based access controls. However, no method of transmission over the internet is 100% secure.

8. YOUR RIGHTS

• Access, correct, or delete your personal data.
• Cancel your subscription at any time.
• Leave a school plan and subscribe individually.
• Request an export of your progress data.
• Remove agents from your network, which also stops sharing your availability with them.
• Turn off push notifications at any time in your device settings.

8A. SCHOOLS & DISTRICTS

When a school or district subscribes, the school is the account holder and directs how student data is used within the Service. Schools confirm that they have the authority — under their own parental-consent and student-records policies — to create or invite student accounts. Family plan owners confirm the same for the children they add. Student data is used only to deliver instruction and report progress to that school's teachers and administrators; it is never sold, used for advertising, or used to build profiles outside the Service.

We distinguish two separate actions, and they are not interchangeable:

• Removal from a school: Ends the student's or teacher's access to that school and its classes. The account and its progress history remain, so the person can rejoin a school or continue on an individual plan, and a school admin can restore the membership.
• Erasure of an account: Permanently and irreversibly deletes the account and its personal data — progress, scores, roster links, codename, and profile. Records that belong jointly to another person, such as a completed challenge, are kept in anonymized form so the other participant's own history stays intact. Erasure cannot be undone.

A school or district may request removal or erasure for any member of its organization, or for the entire organization, by contacting us at help@thealphaparticle.com. We honor verified deletion requests, and we can provide written confirmation once a deletion is complete. Accounts that currently own an active or trialing paid subscription must cancel or transfer billing before erasure, so that an organization's paid access is never destroyed by accident.

9. CHANGES TO THIS POLICY

We may update this Privacy Policy from time to time. We will notify users of significant changes through the Service. Continued use after changes constitutes acceptance.

10. CONTACT

If you have questions about this Privacy Policy, or you would like to access, export, or delete your data, please contact us at help@thealphaparticle.com.