Privacy Policy

Last updated: March 2026

1. Introduction

Welcome to JP Numbers Drill ("the App"). We are committed to protecting your personal information and your right to privacy. This Privacy Policy explains how we collect, use, and safeguard your data when you use our App.

2. Information We Collect

2.1 Information You Provide

The App does not require you to create an account. All practice data (scores, progress, favorites) is stored locally on your device and is never transmitted to our servers.

2.2 Automatically Collected Information

• App usage data: We may collect anonymous, aggregated information about how the App is used (e.g., feature usage frequency) via Firebase Analytics to improve the App experience.
• Crash reports: If the App crashes, anonymized crash logs may be sent via Firebase Crashlytics to help us fix bugs.
• Advertising data: If you view ads, our advertising partner (Google AdMob) may collect device identifiers and behavioral data in accordance with Google's Privacy Policy to serve relevant advertisements.

3. How We Use Your Information

• To operate and improve the App
• To diagnose and fix technical issues
• To display relevant advertisements
• To comply with legal obligations

We do not sell, rent, or share your personal data with third parties for their own marketing purposes.

4. Data Storage and Security

All your learning progress data is stored locally on your device using SQLite. We do not have access to this data. If you uninstall the App, this data will be permanently deleted.

5. Third-Party Services

The App uses the following third-party services, each governed by their own privacy policies:

• Google Firebase — Analytics & Crashlytics: firebase.google.com/support/privacy
• Google AdMob — Advertising: policies.google.com/privacy
• Flutter TTS — Text-to-speech (processes audio locally, no data sent)

6. Children's Privacy

The App is not directed to children under the age of 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal information, please contact us.

7. Your Rights

Depending on your jurisdiction, you may have rights to:

• Access the personal data we hold about you
• Request correction or deletion of your data
• Object to processing of your data
• Lodge a complaint with a supervisory authority

Since we store no personal data on our servers, most requests can be fulfilled by clearing the App's local data on your device.

8. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of significant changes by updating the "Last updated" date at the top of this page. Continued use of the App after changes constitutes your acceptance of the revised policy.

9. Contact Us

If you have any questions about this Privacy Policy, please contact us:

• Email: support.numdrill-jp@goappkit.com