Terms of Service – NineByNine

Last Updated: January 10, 2026
Effective Date: January 10, 2026

Quick Summary:

By using NineByNine, you agree to these terms. The app is free to use, and we respect your privacy. You own your data. Don't cheat or reverse-engineer the app. We may update the app or these terms from time to time. Questions? Contact us at support@privycentral.com.

1. Acceptance of Terms

Welcome to NineByNine. These Terms of Service govern your access to and use of the NineByNine mobile application developed and published by Privy Central.

By downloading, installing, accessing, or using NineByNine, you agree to be bound by these Terms. If you do not agree to these Terms, do not use the App.

2. Description of Service

NineByNine is a Sudoku puzzle game with progression features, including:

  • Classic Sudoku gameplay across multiple difficulty levels
  • Experience points (XP) and leveling system
  • Achievement tracking and unlocking
  • Daily challenges and streak tracking
  • Statistics and performance analytics
  • Optional Apple Game Center integration for leaderboards
  • Local data storage and offline play

The App is currently provided free of charge.

3. License to Use

Grant of License

Subject to your compliance with these Terms, Privy Central grants you a limited, non-exclusive, non-transferable, revocable license to:

  • Download and install the App on devices you own or control
  • Use the App for personal, non-commercial entertainment purposes

License Restrictions

You agree NOT to:

  • Copy or distribute the App except as permitted by the App Store
  • Modify, reverse engineer, decompile, or disassemble the App or any part thereof
  • Remove, alter, or obscure any copyright, trademark, or proprietary notices
  • Use automated tools (bots, scripts, cheats) to interact with the App

4. User Conduct

You agree to use NineByNine in accordance with these rules:

  • Cheating: Using hacks, mods, exploits, or automated tools to gain unfair advantages
  • Fraud: Manipulating leaderboards, achievements, or game mechanics through unauthorized means
  • System Abuse: Attempting to disrupt, damage, or impair the App's functionality

5. Intellectual Property

NineByNine and all its contents, features, and functionality are owned by Privy Central and are protected by copyright, trademark, patent, trade secret, and other intellectual property laws.

The classic Sudoku puzzle format and rules are in the public domain. Our implementation, puzzle generation algorithms, and game features are proprietary to Privy Central.

6. Disclaimers and Warranties

IMPORTANT LEGAL NOTICE:

THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND.

7. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, PRIVY CENTRAL SHALL NOT BE LIABLE FOR ANY DAMAGES ARISING FROM YOUR USE OF THE APP.

8. Contact Information

If you have any questions about these Terms, please contact us:

Privy Central
Email: support@privycentral.com
Website: https://privycentral.com

Last updated: January 10, 2026
Effective date: January 10, 2026
Version: 1.0