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Privacy Policy

Last Updated: January 21, 2026

1. Introduction

Welcome to Sudoku Slice, developed and operated by DaatStudio ("we," "us," or "our"). We are committed to protecting your privacy and being transparent about how we collect, use, and protect your information.

This Privacy Policy explains:

By using Sudoku Slice, you agree to the collection and use of information in accordance with this Privacy Policy. If you do not agree with our policies and practices, please do not use the app.

Developer Information:

2. Information We Collect

2.1 Personal Information

When you create an account or sign in to Sudoku Slice, we may collect:

Sign-In Methods:

2.2 Game Data

We collect information about your gameplay to provide features like cloud sync, statistics, and achievements:

2.3 Purchase Information

When you make in-app purchases, we collect:

Note: Payment processing is handled entirely by Apple App Store or Google Play Store. We never see or store your credit card information, billing address, or other payment details.

2.4 Technical Information

We automatically collect certain technical information to provide and improve the app:

2.5 Analytics Data

We use Firebase Analytics (a Google service) to understand how users interact with the app:

Important: Firebase Analytics is enabled by default. You can disable analytics tracking in Settings > Privacy > Analytics.

3. How We Use Your Information

We use the collected information for the following purposes:

3.1 Provide Core Functionality

3.2 Process In-App Purchases

3.3 Improve the App

3.4 Provide Customer Support

3.5 Legal Compliance

4. How We Store Your Information

4.1 Local Storage (Your Device)

Hive Database (Unencrypted):

We store data locally on your device using Hive, a lightweight database. Important: This data is stored unencrypted in plain text on your device.

Local data includes:

Security Note: Anyone with physical access to your device or device backups may be able to access this data. We recommend:

Data Persistence:

4.2 Cloud Storage (Firebase)

We use Google Firebase services to store and sync your data in the cloud:

Firebase Authentication:

Cloud Firestore:

Data Stored in Firestore:

5. Data Retention

We retain your data for different periods depending on the type:

5.1 Daily Statistics

5.2 Account Data

5.3 Purchase Records

5.4 Analytics Data

5.5 Local Device Data

6. Data Sharing and Third Parties

We do not sell your personal data to anyone. We share data only with the following trusted third parties necessary to operate the app:

6.1 Firebase Services (Google)

We use the following Firebase services:

Firebase Authentication:

Cloud Firestore:

Firebase Analytics:

Firebase Crashlytics:

Data Shared with Google:

6.2 Sign-In Providers

Google Sign-In:

Apple Sign-In:

We receive only the information you authorize (email, name, profile photo). We do not have access to your Google or Apple account passwords.

6.3 In-App Purchase Providers

Apple App Store (iOS):

Google Play Store (Android):

We receive only purchase verification data (product ID, purchase date, receipt). We never see your payment information.

6.4 Leaderboards (Public Display)

Important: When you use leaderboards, the following information is visible to other players:

Privacy Options:

6.5 No Data Sale or Advertising

We want to be clear:

7. Your Privacy Rights

You have important rights regarding your personal data:

7.1 Access Your Data

You have the right to know what personal data we have about you.

How to Request:

  1. Email hello@daatstudio.dev with subject "Data Access Request"
  2. Include your account email and user ID (found in Settings)
  3. We will respond within 30 days with a copy of your data

What You'll Receive:

7.2 Delete Your Data

You have the right to delete your account and data.

To Delete Your Account:

  1. Open Sudoku Slice
  2. Go to Settings > Account
  3. Tap "Delete Account"
  4. Confirm deletion

What Gets Deleted:

What Persists:

To Request Complete Cloud Data Deletion:

  1. Email hello@daatstudio.dev with subject "Delete My Data"
  2. Include your account email and user ID
  3. We will manually delete your Firestore data within 30 days
  4. Deletion is permanent and cannot be undone

Note: Deleting your account does not automatically cancel ongoing subscriptions (though Sudoku Slice currently has no subscriptions). You must cancel subscriptions separately through Apple or Google.

7.3 Export Your Data (Data Portability)

You have the right to receive a copy of your data in a portable format.

How to Request:

  1. Email hello@daatstudio.dev with subject "Data Export Request"
  2. Include your account email and user ID
  3. We will provide your data in JSON format within 30 days

Exported Data Includes:

7.4 Opt-Out of Analytics

You can disable Firebase Analytics tracking.

How to Opt-Out:

  1. Open Sudoku Slice
  2. Go to Settings > Privacy
  3. Toggle "Analytics" off

Limitations:

7.5 Withdraw Consent

You can withdraw consent for data processing at any time by:

Note: Withdrawing consent may limit app functionality (e.g., no cloud sync, no leaderboards).

8. Children's Privacy

Sudoku Slice is rated for ages 4+ and is not specifically directed at children under 13 years of age.

Our Approach:

For Parents:

If you believe your child under 13 has provided personal information to us without your consent:

  1. Email hello@daatstudio.dev with subject "Child Privacy Concern"
  2. Provide the account details
  3. We will promptly delete the account and associated data

Anonymous Play:

Children can use Sudoku Slice without creating an account by using Anonymous sign-in, which does not collect email, name, or other identifying information.

Recommended for Children:

9. International Users

Sudoku Slice is operated from the United Kingdom and is available worldwide.

9.1 GDPR (European Union Users)

If you are located in the European Economic Area (EEA), United Kingdom, or Switzerland, you have additional rights under the General Data Protection Regulation (GDPR) and UK GDPR.

Legal Basis for Processing:

We process your personal data under the following legal bases:

Your GDPR Rights:

  1. Right to Access: Request a copy of your personal data
  2. Right to Rectification: Correct inaccurate or incomplete data
  3. Right to Erasure: Request deletion of your data ("right to be forgotten")
  4. Right to Restrict Processing: Limit how we use your data
  5. Right to Data Portability: Receive your data in a portable format
  6. Right to Object: Object to certain types of processing
  7. Right to Withdraw Consent: Withdraw consent for analytics at any time

How to Exercise Your Rights:

Data Transfers:

Your data may be transferred to and stored in countries outside the EEA, including:

Supervisory Authority:

You have the right to lodge a complaint with your local data protection authority if you believe we have violated your privacy rights.

UK Supervisory Authority:

9.2 CCPA (California Users)

If you are a California resident, you have rights under the California Consumer Privacy Act (CCPA).

Personal Information We Collect:

See Section 2 (Information We Collect) for details. In CCPA terms, we collect:

How We Use Personal Information:

See Section 3 (How We Use Your Information) for details.

Your CCPA Rights:

  1. Right to Know:
  1. Right to Delete:
  1. Right to Opt-Out of Sale:
  1. Right to Non-Discrimination:

How to Exercise Your Rights:

Do Not Sell My Personal Information:

We do not sell personal information to third parties. You do not need to opt-out of sales because we don't engage in this practice.

Authorized Agents:

You may designate an authorized agent to make CCPA requests on your behalf. The agent must provide proof of authorization.

10. Security

We take reasonable measures to protect your information from unauthorized access, loss, or misuse.

10.1 Local Data Security

Unencrypted Storage:

Device Security Best Practices:

10.2 Cloud Data Security

Firebase Security:

Authentication Security:

10.3 Purchase Verification Security

10.4 Security Limitations

No System is 100% Secure:

Despite our efforts, we cannot guarantee absolute security. Risks include:

Your Responsibilities:

10.5 Data Breach Notification

In the event of a data breach that affects your personal information:

11. Cookies and Tracking Technologies

Sudoku Slice is a mobile app, not a website. We do not use cookies.

However, we use similar tracking technologies:

11.1 Firebase Analytics

Firebase Analytics uses identifiers to track app usage:

You can opt-out: Settings > Privacy > Analytics

11.2 Crashlytics Tracking

Firebase Crashlytics collects crash and error data:

Note: Crashlytics tracking cannot be disabled, as it's essential for bug fixes. All data is anonymized.

11.3 Advertising ID

We do not use your Advertising ID (IDFA on iOS, AAID on Android) for any purpose. Sudoku Slice does not display advertisements.

12. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in our practices, technology, legal requirements, or other factors.

How We Notify You:

Your Responsibility:

Policy Version History:

13. Contact Us

If you have questions, concerns, or requests regarding this Privacy Policy or your personal data:

Email: hello@daatstudio.dev

Subject Line Examples:

Response Time:

What to Include in Your Request:

Data Protection Officer:

While not legally required for our size, you may direct GDPR-related inquiries to:

14. Governing Law and Jurisdiction

This Privacy Policy is governed by the laws of the United Kingdom.

Jurisdiction:

International Users:

15. Third-Party Links

Sudoku Slice may contain links to third-party websites or services (e.g., Google Privacy Policy, Apple Privacy Policy).

Important:

Third-Party Services in Use:

16. Your Consent

By using Sudoku Slice, you consent to:

Withdrawal of Consent:

17. Additional Information for App Store Compliance

17.1 Apple App Store Privacy Details

The following data is linked to your identity (if you sign in):

The following data is not collected if you use Anonymous sign-in:

17.2 Google Play Store Data Safety

Data Collected:

Data Shared: With Firebase (Google) for cloud sync and analytics

Security Practices:

Summary (Quick Reference)

What We Collect:

How We Use It:

Who We Share With:

Your Rights:

Important Disclosures:

Contact:

hello@daatstudio.dev

Thank you for trusting DaatStudio with your privacy. We are committed to protecting your information and providing you with a safe, enjoyable gaming experience.

*This Privacy Policy was last updated on January 21, 2026. For previous versions or additional questions, please contact hello@daatstudio.dev.*