Privacy Policy
Last Updated: April 2, 2026
Thank you for choosing to use WristSudoku (hereinafter referred to as "the App"). This Privacy Policy is intended to inform you about how we collect, use, store, and protect your personal information. Please read this Privacy Policy carefully before using the App.
1. Information We Collect
1.1 Game Progress
To provide a continuous gameplay experience, the App stores your current game state locally on your Apple Watch, including:
- Puzzle identifier and difficulty level
- Current board state and initial puzzle layout
- Solution for the active puzzle
- Notes (pencil marks) for each cell
- Elapsed time and remaining hints
- Move history for undo support
1.2 Game Statistics
The App records the following statistics locally on your device:
- Completed puzzle identifiers per difficulty level
- Best completion time for each puzzle
These statistics are used to display your progress and performance across all four difficulty levels (Beginner, Easy, Medium, and Hard).
1.3 User Preferences
The App stores the following preference settings locally on your device:
- Haptic feedback toggle (on/off)
- Error checking toggle (on/off)
- Related cell highlighting toggle (on/off)
1.4 Information We Do Not Collect
The App does not collect, access, or transmit:
- Personal identity information
- Location data
- Health or sensor data
- Photos, contacts, or media files
- Analytics or usage tracking data
- Crash reports to third-party services
- Device identifiers or advertising identifiers
2. How We Use Information
All data is used solely for the following purposes on your device:
- Saving and restoring your current game progress
- Tracking puzzle completion and best times across difficulty levels
- Displaying game statistics and progress
- Remembering your preference settings
3. Information Sharing
We do not share any of your data with third parties. The App operates entirely offline with no network connectivity. No data is uploaded to any server, cloud service, or third-party platform.
4. Data Storage and Security
- All data is stored locally on your Apple Watch using standard system storage (UserDefaults)
- No data is transmitted over the internet
- No third-party analytics, advertising, or tracking SDKs are included
- Uninstalling the App will permanently delete all stored data
5. Your Rights
You may at any time:
- Start a new game to overwrite your saved progress
- Delete the App to permanently erase all stored data
- Contact us with privacy-related questions
6. Children's Privacy
The App is intended for general audiences and does not knowingly collect personal information from children under the age of 13. No registration or personal information is required to use the App.
7. Privacy Policy Changes
We may update this Privacy Policy from time to time. Any changes will be announced on our website.
8. Contact Us
If you have any questions about this Privacy Policy, please contact us via: