Privacy Policy

Last updated: August 2025

Overview

This Privacy Policy describes how Sudoku ("we", "our", or "us") collects, uses, and protects your information when you use our mobile application.

Information We Collect

Information You Provide

Feedback Communications: When you send feedback through the app, we collect your email address and the content you provide
Support Requests: Any information you voluntarily provide when contacting our support team

Automatically Collected Information

App Version: We automatically include your app version in feedback emails for troubleshooting purposes
Game Data: Your game settings, preferences, and progress are stored locally on your device only
Advertising ID: When you grant permission, we may collect your device's advertising identifier to provide personalized ads
Ad Interaction Data: Information about your interactions with advertisements for ad performance measurement

How We Use Your Information

To respond to your feedback and support requests
To improve the app based on user feedback
To fix bugs and technical issues
To develop new features based on user suggestions

Data Storage and Security

Local Storage: All game data (progress, settings, statistics) is stored locally on your device
No Cloud Sync: We do not store your game data on our servers
Feedback Data: Feedback emails are retained for up to 2 years for quality improvement purposes
Security: We implement appropriate technical and organizational measures to protect your data

Advertising

Our app displays advertisements provided by Google AdMob to help support ongoing development:

Ad Provider: Google AdMob serves advertisements in our app
Personalized Ads: With your consent via App Tracking Transparency (iOS), ads may be personalized based on your advertising ID
Non-Personalized Ads: If you decline tracking permission, you will see non-personalized ads
Frequency: Interstitial ads appear after every 3 completed games
Banner Ads: Small banner ads may appear at the bottom of certain screens
Google's Privacy Policy: Learn more about how Google uses data at https://policies.google.com/privacy

Data Sharing

We do not sell, trade, or share your personal information with third parties except:

When required by law
To protect our rights or the safety of others
With your explicit consent
With advertising partners (Google AdMob) for the purpose of serving ads, subject to their privacy policies

Your Rights

You have the right to:

Request deletion of your feedback data
Access information we have about you
Correct inaccurate information
Withdraw consent for future communications

Children's Privacy

Our app is suitable for all ages. We do not knowingly collect personal information from children under 13 without parental consent.

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify users of any material changes by updating the "Last updated" date.

Contact Us

If you have questions about this Privacy Policy, please contact us:

support@sudokuservice.com

Support

Getting Help

We're here to help you enjoy the best Sudoku experience possible. Here are the ways you can get support:

In-App Feedback

To send feedback directly from the app:

Open the app and go to Settings
Tap Feedback
Select Send Feedback
Choose your feedback type:
- Bug Report: For issues and problems
- Feature Request: For new ideas and suggestions
- General Feedback: For any other comments
Your email app will open with a pre-filled template
Add your specific details and send

Direct Email Support

Email Us Directly

You can also email us directly at:

support@sudokuservice.com

Response Time: We typically respond within 2-3 business days

Frequently Asked Questions

Game Issues

Q: The app is crashing or not responding
A: Try closing and reopening the app. If the issue persists, restart your device and ensure you have the latest app version installed.

Q: I lost my game progress
A: Game progress is saved locally on your device. If you've deleted the app or switched devices, unfortunately the progress cannot be recovered as we don't store data in the cloud.

Q: How do I use notes/candidates?
A: Tap the pencil icon in the bottom controls to toggle notes mode. In notes mode, tapping numbers will add small candidate numbers to cells instead of filling them.

Settings & Features

Q: How do I change the theme?
A: Go to Settings > Appearance > Theme. You can choose between Light, Dark, or Auto (follows system theme).

Q: Can I turn off vibrations?
A: Yes, go to Settings > Haptics and toggle "Haptic Feedback" off.

Q: What are Developer Options?
A: These are advanced features for experienced users. They can be unlocked through a secret sequence in the About section.

Technical Requirements

iOS: Requires iOS 13.0 or later
Android: Requires Android 8.0 (API level 26) or later
Storage: Approximately 50MB of free space
Internet: Not required for gameplay (offline app)

Troubleshooting Tips

Ensure you have the latest version of the app installed
Restart the app if you experience any issues
Free up device storage if the app is running slowly
Check that your device meets the minimum requirements
Try turning off other apps to free up memory

Send Feedback

We Value Your Input

Your feedback helps us improve the Sudoku experience for everyone. Whether you've found a bug, have an idea for a new feature, or just want to share your thoughts, we'd love to hear from you!

Types of Feedback

🐛 Bug Reports

Found something that's not working correctly? Help us fix it by reporting:

What you were trying to do
What actually happened
Steps to reproduce the issue
Your device model and app version

💡 Feature Requests

Have an idea that would make the app better? We'd love to hear about:

New solving techniques or hints
Additional customization options
Accessibility improvements
Quality of life enhancements

💬 General Feedback

Share your overall experience:

What you love about the app
Areas for improvement
Suggestions for new puzzle types
User interface feedback

How to Send Feedback

Method 1: In-App Feedback (Recommended)

Open Sudoku app
Go to Settings → Feedback
Tap "Send Feedback"
Choose your feedback type
Complete the pre-filled email template

Method 2: Direct Email

Send your feedback directly to:

feedback@sudokuservice.com

What Happens Next?

Acknowledgment: We'll confirm receipt of your feedback within 24 hours
Review: Our team reviews all feedback carefully
Response: We typically respond within 2-3 business days
Implementation: Great suggestions may appear in future updates!

Feedback Guidelines

Be specific and detailed in your descriptions
Include screenshots if reporting visual issues
One issue or suggestion per email when possible
Be respectful and constructive
Include your app version for technical issues

Terms of Use

Last updated: August 2025

Acceptance of Terms

By downloading, installing, or using the Sudoku mobile application, you agree to be bound by these Terms of Use.

License to Use

We grant you a limited, non-exclusive, non-transferable license to use the Sudoku app for personal, non-commercial purposes.

Permitted Uses

Play Sudoku puzzles for entertainment
Customize app settings for your preferences
Share your achievements with friends
Provide feedback to improve the app

Prohibited Uses

You may not:

Reverse engineer, decompile, or disassemble the app
Use the app for commercial purposes without permission
Attempt to hack, modify, or exploit the app
Remove or alter copyright notices
Use automated systems to interact with the app

Intellectual Property

The Sudoku app and all its content, features, and functionality are owned by us and are protected by international copyright, trademark, and other intellectual property laws.

User-Generated Content

When you send feedback or communicate with us:

You retain ownership of your original content
You grant us permission to use your feedback to improve the app
We may reference your suggestions in development
Your personal information remains protected per our Privacy Policy

Disclaimers

The app is provided "as is" without warranties of any kind. We do not guarantee:

Uninterrupted or error-free operation
Compatibility with all devices
Preservation of user data across updates
Availability of specific features

Limitation of Liability

To the maximum extent permitted by law, we shall not be liable for any indirect, incidental, special, or consequential damages arising from your use of the app.

Updates and Modifications

We may update the app periodically
Updates may change features or functionality
Continued use constitutes acceptance of changes
We may modify these terms with notice to users

Termination

You may stop using the app at any time by deleting it from your device. We may terminate your access if you violate these terms.

Contact Information

Questions About Terms

If you have questions about these Terms of Use:

support@sudokuservice.com