Privacy Policy
Club 81: Neon Sudoku
Last Updated: November 12, 2026
Club 81 is a puzzle game that runs on your device. This policy explains what information it keeps and what, if anything, leaves your device.
The short version: Club 81 collects no personal information. It has no accounts, no sign-in, no advertising, no analytics and no tracking. Anonymous crash reports are the only thing it ever sends.
What We Collect
No personal information. Club 81 has no accounts, no sign-in, no advertising, no analytics and no tracking.
Crash Reports
If Club 81 crashes or hits an error, it sends a crash report so the problem can be found and fixed. A report contains what went wrong in the app's code, the app version, your device model, its iOS version and language, and the time. It does not contain your name, contact details, location, game progress or anything that identifies you, and it is not used for advertising or tracking.
Crash reports are processed by Sentry (Functional Software, Inc.), which receives your device's IP address when a report is sent but is set up not to store it with the report. Sentry deletes reports after at most 90 days. Sending a crash report is the only time Club 81 connects to the internet.
What Stays on Your Device
To remember your game, Club 81 stores the following on your device only:
- Your level progress and stars
- A game in progress
- Your play statistics
- Your daily challenge streak
- The trophies you have unlocked
- Your settings
None of it leaves your device. Your device may include it in your own backups, according to your device's backup settings.
You can erase all of your progress at any time in Settings, under Reset Progress. Deleting the app removes everything it stored.
Children's Privacy
Club 81 is suitable for all ages and collects no personal information from anyone, including children.
Contact Us
If you have any questions or concerns about this privacy policy or our data practices, please don't hesitate to contact us:
Email: hello@jcyrus.com
Website: jcyrus.com
Changes to This Privacy Policy
If this policy changes, the new version will appear in the app, on this page and on the Club 81 App Store page, with a new "Last Updated" date above.
This privacy policy is effective as of November 12, 2026. For questions or to report privacy concerns, please contact hello@jcyrus.com.
