Privacy Policy

Last Updated: May 12, 2026

MathDrill ("we", "us", or "our") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our mobile application.

            Key Point: MathDrill is designed with privacy in mind. All your practice data and wrong answer records are stored locally on your device using Apple's standard UserDefaults storage. We do not collect, transmit, or store any personal data on external servers.
        

1. Information We Collect

Data Type	Collected?	Purpose	Linked to User?
Personal Identifiers	No	N/A	N/A
Contact Info	No	N/A	N/A
Location Data	No	N/A	N/A
Photos / Videos	No	N/A	N/A
Usage Data (analytics)	No	N/A	N/A
Diagnostics / Crash Data	No	N/A	N/A
Practice Records	Yes (local only)	Track progress and wrong answers	No
App Preferences	Yes (local only)	Store sound and vibration settings	No

2. How We Use Your Information

Since all data is stored locally on your device, we do not process your data on any server. The locally stored information is used solely for:

Saving your practice sessions and scores
Tracking wrong answers for review in the Wrong Book
Calculating statistics such as accuracy and average time
Remembering your preferences (sound, vibration, difficulty settings)

3. Data Storage and Security

All data is stored locally on your device using Apple's encrypted storage mechanisms (UserDefaults with app-specific keys). We do not operate any backend servers, databases, or cloud services for data storage.

If you enable iCloud backup for your device, your local app data may be included in your encrypted device backup at Apple's discretion.

4. Third-Party Services

MathDrill does not integrate with any third-party analytics, advertising, or tracking SDKs. The app is entirely self-contained and does not share data with external parties.

5. Children's Privacy

MathDrill is suitable for users of all ages, including children. We do not knowingly collect any personal information from children under 13. Since the app stores no identifiable information and operates entirely offline, it complies with COPPA and similar children's privacy regulations.

6. Your Rights

You have full control over your data:

Access: All your data is visible within the app via the Statistics and Wrong Book screens.
Delete: You can clear all practice records and wrong answers at any time through the Settings screen.
Reset: Use the "Reset All Data" option in Settings to erase all stored data immediately.
Portability: Data is stored in standard JSON format within your device's local storage.

7. Data Retention

Your practice data is retained on your device until you choose to delete it using the in-app reset feature or by uninstalling the app. Uninstalling MathDrill will permanently remove all locally stored data.

8. Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated "Last Updated" date. We encourage you to review this policy periodically.

9. Contact Us

If you have any questions about this Privacy Policy or our data practices, please contact us at:

Email: support@mathdrill.app