Privacy Policy

Sudoku Replay & Timer for NYT - Chrome Extension

            Summary: This extension stores all data locally on your device. We do not collect, transmit, or sell your personal information. Your puzzle data never leaves your browser unless you explicitly choose to share it.
        

1. Information We Collect

The extension collects the following data only from NYT Sudoku puzzle pages (nytimes.com/puzzles/sudoku):

Data Type	Purpose
Cell entries (numbers 1-9)	Record your solving moves
Pencil marks/notes	Track candidate numbers you enter
Cell clears	Record when you remove entries
Timestamps	Calculate timing statistics
Puzzle date & difficulty	Identify and organize saved games
In-game timer value	Display accurate solving time

2. Information We Do NOT Collect

We do not collect:

Your name, email, or any personal identifiers
Your NYT account information or login credentials
Your browsing history or activity on other websites
Your location or IP address
Any financial or payment information

3. How Data Is Stored

            Local Storage Only: All game data is stored locally on your device using Chrome's built-in storage API (chrome.storage.local). Your data never leaves your browser.
        

Storage details:

Data is stored in Chrome's extension storage, separate from website data
Maximum of 6 recent game sessions are retained
Older sessions are automatically deleted to manage storage
You can delete all data by uninstalling the extension

4. How Data Is Used

Your game data is used exclusively to:

Display your saved games in the extension popup
Enable step-by-step replay of your solving sessions
Calculate and display performance statistics
Generate shareable replay links (when you choose to share)

5. Data Sharing

We do not share your data with any third parties.

The only way your game data leaves your device is if you explicitly click the "Share Replay" button. When you share:

Your game session is compressed and encoded into the URL itself
The data travels through the URL, not through our servers
Our Vercel-hosted viewer page only serves static files - it does not receive, process, or store your game data
Anyone with the link can view the replay in their browser

6. Third-Party Services

The web-based replay viewer (hosted on Vercel) includes Vercel Analytics, which may collect:

Anonymous page view counts
General geographic region (country-level)
Browser and device type

This analytics data is anonymous and does not include any of your game data or personal information. It helps us understand how many people use the viewer.

7. Your Rights & Control

You have full control over your data:

Access: View all your saved games through the extension popup
Export: Use the Share feature to export any game as a URL
Delete: Uninstall the extension to remove all stored data, or clear extension data in Chrome settings

8. Children's Privacy

This extension does not knowingly collect any personal information from children under 13. The extension only records puzzle gameplay data and does not require or request any personal information.

9. 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 revision date. Continued use of the extension after changes constitutes acceptance of the updated policy.

10. Contact

If you have questions about this privacy policy or the extension, please:

Submit feedback via our feedback form

11. Permissions Explained

Permission	Why It's Needed
`storage`	Save your game sessions locally on your device
`host_permissions` for nytimes.com/puzzles/sudoku	Inject the recorder script to capture your moves on NYT Sudoku pages only