MathCrew Privacy Policy

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MathCrew Privacy Policy

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Last updated: 20-May-2026

Effective date: 20-May-2026

The short version

MathCrew does not collect, store, or share any personal information about you. We don't track you. We don't show ads. We don't use any third-party analytics or marketing services. Everything you do in MathCrew stays on your device or within Apple's own services (iCloud, Game Center, App Store) under Apple's privacy terms. If you only read this much, that's the gist.

1. Who we are

MathCrew is an iOS app built by the RS Grid team. You can contact us at team.rs.grid@gmail.com.

2. What data we collect

None. MathCrew does not collect, transmit, or store any personal data about you on our servers — because we don't have servers. Your quiz history, progress, preferences, and any other in-app data live entirely on your device. You don't need to create an account, sign in, or provide any information to use MathCrew.

3. Data stored on your device

MathCrew stores some data locally on your iPhone, iPad, or Mac to make the app work. This includes your quiz progress, stars, and scores; your selected age band and theme preferences; your personal best records; and app settings such as sound and notifications. This data is stored on your device using standard iOS storage. It is not transmitted anywhere. You can clear this data at any time by deleting the app.

4. Apple services we rely on

MathCrew uses several Apple services to provide core functionality. When you use these features, Apple's own privacy policy applies to how Apple handles your data — not ours.

iCloud is used to sync your quiz progress across your Apple devices, if you choose to enable iCloud sync. Data synced via iCloud is governed by Apple's iCloud terms and privacy policy.

Game Center is used for track your XP across game levels and compete with Friends and family members

App Store and In-App Purchases handle purchases of MathCrew Unlimited. We do not see your payment information. Apple shares only the minimum information needed to confirm that a purchase was made.

Family Sharing lets your purchase be shared with members of your Apple Family Sharing group. Apple manages this; we do not control or see your family group membership.

For details on how Apple handles data from these services, see Apple's Privacy Policy at https://www.apple.com/legal/privacy/

5. Multiplayer (Family Quiz)

The Family Quiz feature lets you play multiplayer quizzes with people nearby using your local Wi-Fi or Bluetooth. During a multiplayer session, display names you enter are visible to other players in your session, and quiz answers and scores are shared between devices in your session so the game can work. All multiplayer data is exchanged directly between devices in your immediate vicinity — it does not go through any server. No multiplayer session data is stored permanently on any device after the session ends. We do not log, store, or transmit any data from your multiplayer sessions.

6. Children's privacy

MathCrew is designed to be safe for users of all ages, including children. Because we do not collect any personal information, we do not knowingly collect personal information from children under 13 — or anyone of any age. There is no account system, no profile creation requiring personal data, no chat, and no way to communicate with strangers. If your child uses MathCrew, all data stays on their device or within your family's Apple services.

7. Third-party services

None. MathCrew does not integrate with any third-party analytics, advertising, crash reporting, or marketing services. We don't use Google Analytics, Firebase Analytics, Facebook SDK, AdMob, or any similar tools.

8. Tracking

We do not track you across apps or websites. MathCrew does not use the iOS Advertising Identifier (IDFA) or any similar device identifiers for tracking purposes.

9. Data security

Because MathCrew does not collect or transmit personal data, there is no personal data on our side to secure. Data on your device is protected by your device's built-in iOS security (passcode, Face ID, Touch ID). Data synced via iCloud is secured by Apple's iCloud infrastructure.

10. Your rights

Since we don't have any of your personal data, there is no personal data for you to access, correct, or delete on our side. To remove all MathCrew data from your device, simply delete the app. To remove any synced data, sign out of iCloud or delete the app from all your Apple devices.

11. Changes to this policy

We may update this privacy policy from time to time. If we ever start collecting any data — which would be a significant change — we will update this page and clearly communicate the change before it takes effect, including via an in-app notification. The "Last updated" date at the top of this page indicates when the policy was most recently revised.

12. Contact

If you have questions about this privacy policy, please contact us at <contact@rsgrid.net>. We typically respond within 5-10 business days.