Last updated: October 1, 2026
Lunar Computing, Inc. ("we," "us," or "our") develops the Tessel: Sudoku & Logic Puzzles iOS app. This Privacy Policy explains how Tessel: Sudoku & Logic Puzzles handles information when you use the app.
Tessel is fully offline. Your games, settings and statistics stay on your device; nothing you do in Tessel is sent to us or to anyone else. There are no accounts, ads, analytics or tracking.
Tessel: Sudoku & Logic Puzzles is designed around local, on-device storage. Depending on which features you use, the app may store:
This data is used to provide app functionality and is not sold, used for advertising, or shared with data brokers.
Tessel: Sudoku & Logic Puzzles does not require sensitive iOS permissions for its core functionality. If a future feature asks for a permission, iOS will show the request before access is granted.
You can revoke iOS permissions at any time in Settings. Some app features may stop working after a required permission is revoked.
Tessel does not use iCloud or any cloud service. It works fully offline, with no account.
Apple controls iCloud account authentication and CloudKit infrastructure. We do not receive your Apple ID password, payment information, or private iCloud account credentials.
Tessel is free. It has no in-app purchases and no subscription.
Tessel: Sudoku & Logic Puzzles does not send data to any third-party service.
Tessel: Sudoku & Logic Puzzles is not a medical device and does not provide medical, psychological, legal, financial, or other professional advice. Any journalling, reference, or study content is provided for personal use and self-reflection only. It should not be used to diagnose, treat, prevent, or make decisions about a health condition.
For privacy requests, email [email protected]. For product support, email [email protected].