Legal

Privacy Policy

Last updated: July 2025

This Privacy Policy explains how we collect, use, and protect your information when you use the Sudoku app (“App”). By using the App you agree to the practices described below.

1. Information We Collect

Account Information

When you sign in with Google we receive your name, email address, and profile photo URL. We store these to identify your account and display your profile.

Gameplay Data

Puzzle completion times, scores, streaks, coin balances, and settings are stored to provide leaderboards, rewards, and a seamless experience across devices.

Purchase Information

When you make a purchase through the App Store, Google Play, or Stripe we store transaction identifiers, product IDs, and subscription status. We do not store full credit card numbers—payment processing is handled entirely by Apple, Google, or Stripe.

Device & Analytics

We may collect anonymous device identifiers, crash reports, and usage analytics through Expo and Sentry to diagnose bugs and improve the App. This data cannot be used to personally identify you.

2. How We Use Your Information

Provide, maintain, and improve the App
Process purchases and manage subscriptions
Display leaderboards and achievement progress
Send transactional emails (purchase receipts, subscription changes, password resets)
Detect and prevent fraud or abuse

3. Third-Party Services

We rely on the following services, each operating under its own privacy policy:

Google Sign-In — authentication
Apple App Store / Google Play — in-app purchases
Stripe — web payment processing
MongoDB Atlas — data storage
Expo / Sentry — crash reporting and push notifications

4. Data Retention

We retain your data for as long as your account exists. If you delete your account we permanently remove your personal data within 30 days. Anonymized analytics data may be retained indefinitely.

5. Data Security

We use industry-standard measures to protect your data, including HTTPS encryption in transit, hashed passwords and tokens, and restricted database access. No system is 100% secure, but we take reasonable steps to safeguard your information.

6. Children’s Privacy

The App is not directed at children under 13. We do not knowingly collect personal information from children. If you believe a child has provided us with data, please contact us and we will delete it promptly.

7. Your Rights

Access — request a copy of your stored data
Correction — update inaccurate information via your profile
Deletion — delete your account and data at any time (see Delete Account)
Portability — request your data in a machine-readable format

8. Changes to This Policy

We may update this Privacy Policy from time to time. The “Last updated” date at the top reflects the most recent revision. Continued use of the App after changes constitutes acceptance.

9. Contact Us

Questions or requests about your privacy? Reach us through the in-app Support screen or email us. We aim to respond within 5 business days.

Effective date: July 1, 2025