Privacy Policy
Last updated: July 2026 · Sudoku
This privacy policy explains how the Sudoku mobile app collects, uses, and protects your personal data.
1. Data We Collect
The app collects the following data:
- Username: The nickname you choose to appear on the leaderboard.
- Device ID: An anonymous identifier used to link your account to your device. Contains no personal information.
- Game scores: The times of the puzzles you solve are saved to our server to be shown on the online leaderboard.
- Usage analytics: Anonymous event data (e.g. screen views, puzzle start/completion) to understand app usage. Contains no personal identifying information.
- Advertising ID (IDFA) and ad interaction data: Only if you grant "Tracking" permission, shared with Meta (Facebook/Instagram) to measure ad campaign performance. You can turn this off anytime via iOS Settings > Privacy > Tracking.
Game progress (streaks, badges, hint balance) is stored only locally on your device and is never sent to our servers.
2. Data We Do Not Collect
- Name, surname, email address, or phone number
- Location data
- Camera, microphone, or contacts
- Payment or financial information
3. How We Use Your Data
Collected data is used only for the following purposes:
- Creating and displaying the global leaderboard
- Recognizing your device so you can sign in with the same username
Your data is never sold. Analytics data is used to improve the app experience; if you grant tracking permission, your advertising identifier is shared with Meta to measure ad campaign effectiveness and personalize the ads shown to you.
4. Data Security
Your data is transmitted and stored over encrypted connections (HTTPS/TLS) on Google Cloud infrastructure. The device identifier is kept in your device’s secure storage.
5. Data Retention and Deletion
To request deletion of your account and score data, contact us at the email address below. Your request will be processed within 30 days.
6. Children’s Privacy
The app is intended for users aged 4 and up. We do not knowingly collect personal data from children under 13.
7. Third-Party Services
The app uses the following third-party services:
- Google Cloud Platform: API and database infrastructure. Privacy policy
- Firebase Analytics (Google): Anonymous usage statistics. Privacy info
- PostHog: Product analytics and usage events. Privacy policy
- Meta (Facebook/Instagram): Ad campaign measurement and optimization, only if you grant tracking permission. Privacy policy
8. Policy Changes
This policy may be updated from time to time. Significant changes will be published on this page.
9. Contact
For privacy-related questions: berkanbagci@gmail.com