Welcome to X_Sudoku

A modern, feature-rich Sudoku app with daily challenges, multiple difficulty levels, and comprehensive statistics tracking. Play offline, challenge yourself daily, and master the classic puzzle game.

Frequently Asked Questions (FAQ)

1. Does X_Sudoku require an internet connection?

No. The app works completely offline. All puzzles are generated locally on your device.

2. What difficulty levels are available?

X_Sudoku offers four difficulty levels: Easy, Medium, Hard, and Expert. Each level provides a progressively challenging experience.

3. What are Daily Challenges?

Daily Challenges are special puzzles available once per day. Complete them to earn bonus points and build your streak. Compete with yourself to maintain the longest possible streak!

4. How do Statistics and Achievements work?

X_Sudoku tracks your gameplay statistics including games completed, win rate, average score, and best streak. Unlock achievements as you progress, and advance through player ranks from Novice to Grand Master.

5. What premium features are available?

Premium subscribers gain access to Advanced Statistics with detailed performance insights, Exclusive Challenges including Speed Run and Perfect Run modes, and an ad-free experience.

6. Can I use hints?

Yes. The hint system can help you when you're stuck. However, using hints affects your final score and certain achievements require completing puzzles without hints.

7. What is Pencil Mode?

Pencil Mode lets you add small candidate numbers to cells, helping you track possible solutions just like marking a paper Sudoku puzzle.

8. Which languages are supported?

X_Sudoku supports 11 languages: English, Japanese, Chinese (Simplified & Traditional), Spanish, German, French, Portuguese (Brazil), Korean, Italian, and Russian.

9. Does the app support Dark Mode?

Yes. The interface automatically adapts to your system's Light and Dark Mode settings.

10. Where is my game data stored?

All game data, statistics, and settings are stored locally on your device. Nothing is uploaded to any server, ensuring your privacy.

Contact & Support

Need help or have questions? We're here to assist you.

• Email Support: wuyuping38@gmail.com
• We typically respond within 24-48 hours.

Privacy Policy

• X_Sudoku does not collect, share, or sell any personal data.
• All game data, statistics, and achievements are stored only on your device.
• The app displays ads through Google AdMob. Ad personalization can be controlled through your device settings.
• No account or sign-in is required to use the app.

Terms of Service

Subscription Terms

• X_Sudoku Premium is available as a Monthly, 3-Month (Season), or Annual subscription.
• Payment will be charged to your Apple ID account at confirmation of purchase.
• Subscription automatically renews unless canceled at least 24 hours before the end of the current period.
• Your account will be charged for renewal within 24 hours prior to the end of the current period.
• You can manage and cancel your subscriptions by going to your App Store account settings after purchase.
• Any unused portion of a free trial period will be forfeited when you purchase a subscription.
• Subscription pricing varies by region and is displayed in the App Store and within the app.

Premium Features

X_Sudoku Premium subscription includes:

• Ad-free experience
• Unlimited hints
• Advanced statistics with detailed performance insights
• Exclusive weekly challenges (Speed Run, Perfect Run modes)
• Access to 30-day puzzle archive

Usage Terms

• You may use this app for personal, non-commercial purposes.
• You may not reverse engineer, modify, or redistribute the app.
• We reserve the right to modify or discontinue features at any time.
• We reserve the right to update these Terms of Service. Continued use of the app constitutes acceptance of any changes.

Disclaimer

The app is provided "as is" without warranties of any kind, either express or implied. We are not liable for any damages arising from use of the app.

Release Notes

v1.0

• Initial release with classic Sudoku gameplay
• Four difficulty levels: Easy, Medium, Hard, Expert
• Daily Challenge system with streak tracking
• Comprehensive statistics and achievements
• Hint system and Pencil Mode
• Premium features: Advanced Statistics and Exclusive Challenges
• Support for 11 languages
• Light & Dark Mode support
• Optional timer display
• Undo/Redo functionality