Privacy Policy — Zen Ink Sudoku

Last updated: July 29, 2026

Operator: Chen Ting (doing business as HanWorks)
App: Zen Ink Sudoku (“Sudoku”, “the App”)
Contact: support@hanworks.online
Policy URL: https://www.hanworks.online/sudoku/privacy
Chinese version: https://www.hanworks.online/sudoku/privacy-zh

This Privacy Policy explains how information is handled when you use Zen Ink Sudoku on Apple platforms. By using the App, you agree to this Policy.

1. Summary

• We do not require an account.
• We do not use advertising or cross-app tracking.
• Game progress and purchase status are stored on your device.
• Purchases are processed by Apple, not by us.
• We do not operate a backend that collects your personal data for this App.

2. Information We Process

2.1 Information stored on your device

The App may store locally (for example via system preferences / local storage):

• Game progress, settings, and preferences
• Free-trial / active-day counters used to manage the trial experience
• Whether you have unlocked premium access

This data remains on your device unless you delete the App or clear App data.

2.2 Purchases (Apple)

If you buy the lifetime unlock (or restore a purchase), Apple processes the transaction. We receive confirmation of entitlement through Apple’s In-App Purchase / StoreKit systems. We do not receive your full payment card details.

2.3 Network features used by the App or OS

The App may use the network for:

• Apple In-App Purchase product information, purchase, and restore
• Optional font loading (e.g., Google Fonts) when the device fetches typefaces
• On-device handwriting / ink recognition components that may rely on Apple or Google ML frameworks as packaged with the App

These features are used to run the App. They are not used by us to build advertising profiles.

2.4 Information you send us

If you email support@hanworks.online, we will receive the content of your message and your email address so we can respond. We use that information only for support.

3. Information We Do Not Collect

We do not intentionally collect:

• Name, postal address, or phone number inside the App
• Precise location for advertising
• Contacts, photos, microphone, or camera data
• Analytics profiles for third-party advertising
• Data for “tracking” as defined by Apple’s App Tracking Transparency framework

Our App Privacy Manifest declares that we do not track and do not collect the listed data types for this App.

4. How We Use Information

On-device data is used only to:

• Provide gameplay and save your progress
• Manage the free trial and premium unlock
• Restore purchases
• Improve reliability of local preferences

Support emails are used only to answer your request.

5. Sharing

We do not sell your personal information.

We may share limited information only when:

• Apple processes purchases and related store services
• Required by law, legal process, or to protect rights and safety
• Needed by a service provider acting on our instructions (for example, email infrastructure used to read support mail), under appropriate confidentiality

6. Data Retention

• Local App data stays on your device until you delete the App or clear data.
• Support emails are retained only as long as needed to handle your request and maintain basic records.
• Purchase records are governed by Apple’s systems and policies.

7. Security

We design the App so core gameplay data stays on device. No method of transmission or storage is 100% secure. Please keep your device and Apple ID secure.

8. Children’s Privacy

The App is a general-audience puzzle game. We do not knowingly collect personal information from children. If you believe a child has sent us personal information by email, contact support@hanworks.online and we will delete it when appropriate.

9. International Users

The App may be used outside your country of residence. Support communications may be processed where we or our email providers operate. By using the App or contacting us, you understand that information may be handled in those locations subject to applicable law.

10. Your Choices

• Delete the App to remove local App data from the device.
• Manage or cancel Apple purchases in your Apple ID subscription / purchase settings (as applicable).
• Contact us to request deletion of support emails we hold.
• Review Apple’s privacy controls on your device (Settings → Privacy & Security).

11. Third-Party Services

Purchases and Apple ID services are subject to Apple’s terms and privacy policy. Optional font or ML framework providers may process technical requests when those components contact their networks. We encourage you to review Apple’s policies at https://www.apple.com/privacy/.

12. Changes

We may update this Policy from time to time. The “Last updated” date will change when we do. Continued use of the App after an update means you accept the revised Policy, except where applicable law requires otherwise.

13. Contact

Chen Ting (HanWorks)
Email: support@hanworks.online
Privacy Policy: https://www.hanworks.online/sudoku/privacy
Terms of Use: https://www.hanworks.online/sudoku/terms

This document is provided for App Store transparency based on the App’s current design. It is not formal legal advice.