Lunar ComputingLunar Computing, Inc.[email protected]

Privacy Policy: Tessel: Sudoku & Logic Puzzles

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.

1. Data stored in the app

Tessel: Sudoku & Logic Puzzles is designed around local, on-device storage. Depending on which features you use, the app may store:

  • Games in progress, so you can pick them up where you left off
  • Your results and statistics, such as times and puzzles solved
  • Your settings, such as theme, notes and hint preferences

This data is used to provide app functionality and is not sold, used for advertising, or shared with data brokers.

2. Optional permissions

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.

3. iCloud and on-device processing

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.

4. Purchases

Tessel is free. It has no in-app purchases and no subscription.

5. Third-party services

Tessel: Sudoku & Logic Puzzles does not send data to any third-party service.

6. Health, wellbeing, and reference content

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.

7. Your choices

  • Delete local app data from inside the app where available.
  • Delete the app from your device to remove local app data stored in the app sandbox.
  • Manage iCloud data from iOS Settings if you enabled iCloud sync.
  • Cancel or manage subscriptions in iOS Settings under your Apple ID subscriptions.
  • Revoke optional permissions, such as Microphone, Speech, or Notifications, in iOS Settings.

8. Contact

For privacy requests, email [email protected]. For product support, email [email protected].

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