Zombie Homestead Privacy Policy

Last updated: October 2, 2026

VAULT LLC (合同会社VAULT; "we") establishes this Privacy Policy ("Policy") as follows regarding the handling of users' information in the game app "Zombie Homestead" ("the Service") that we provide.

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1. Business operator

2. Information we collect

The Service does not require account registration or sign-in. We do not collect names, email addresses, phone numbers, addresses, location information, contacts, or photos. In providing the Service, we collect the following information.

• Device random ID: a random identifier created on the device at first launch. It is not an advertising ID or a device-specific identifier. Its first 8 characters are shown on the Settings screen as the "Support ID".
• Game progress: progress such as the stages reached, facility levels, number of residents, amount of in-game currency (Gems), and number of plays.
• Device and app information: OS type (iOS / Android), app version, and language setting.
• Radio League information: the title, name, icon, and avatar you set, your scores, number of sorties, and play records (records of character positions and controls, used to replay your play as a "ghost" on other players' screens).
• Invitation information: each user's invite code and the number of people who joined via the invite link. We do not collect who joined.
• Records of purchase and ad actions: purchase starts, successes, and failures; that you pressed the button to watch an ad; and the stage at that time. For purchases, we record only a non-reversible value (hash value) calculated from the transaction ID, and we do not collect the transaction ID itself, receipts, or payment information such as credit card numbers. Payments are processed by payment providers such as Apple and Google.

Game save data is stored on your device.

3. Purposes of use

We use the information we collect for the following purposes.

1. To provide the Service (game progression, Radio League grouping, rankings, and rewards, and invitation rewards)
2. To grant purchased items and to compile statistics on purchases and ads
3. To investigate defects and respond to inquiries
4. To improve the quality of the Service and analyze usage
5. To prevent misconduct and to respond to names and conduct that violate the Terms of Service

4. Information shown to other users in the Radio League

In the Radio League, your title, name, icon, avatar, scores, number of sorties, and play records (ghosts) are shown to users in the same group. Your device random ID is not shown to other users. Please do not include information that could identify you or others, such as a real name or contact details, in your name. Inappropriate names may be deleted so that they are not displayed.

5. About advertising

The Service uses "Google AdMob", an ad delivery service provided by Google LLC, and displays only rewarded ads that users choose to watch themselves. Google AdMob may collect your advertising ID (IDFA / Android advertising ID), IP address, device information, and the like to deliver ads and measure their effectiveness.

• In regions where consent is required, we display a consent screen before showing ads. You can change your choice at any time from "Ad privacy" on the Settings screen.
• On iOS, we display a screen asking for permission to track you across other companies' apps and websites. You can still watch ads if you do not allow it.
• You can reset your advertising ID or turn off personalized ads in your device settings.

For how Google handles data, please see Google's Privacy Policy and How Google uses information from sites or apps that use our services.

6. Provision to third parties / outsourcing

Within the scope necessary to provide the Service, we outsource data processing to, or send data to, the following external service providers.

Other than the above, we do not provide personal data to third parties without the user's prior consent, except as required by law or where necessary to protect a user's life, body, or property.

7. Provision to third parties in foreign countries

The Service's servers and database are located in the United States of America. Some of the above contractors handle data outside Japan. We take appropriate measures, based on each company's agreements and data-processing terms, to ensure that contractors handle data only within the scope of the outsourced purposes.

8. Data retention and deletion

1. We retain data for the period necessary to achieve the purposes of use, and delete data that is no longer needed.
2. Save data on your device is erased when you delete the app. There is currently no feature for carrying it over after a device change or reinstallation.
3. If you wish to have your data on our servers deleted, please contact the "Contact" desk with the "Support ID" shown on the Settings screen. We will delete the data after confirming that it belongs to your own device. Information that must be retained by law, or data in backups and the like, may remain for a certain period.

9. Use by minors

The Service does not collect information that identifies individuals, such as names or contact details. If you are under 18, please use the Service with the consent of a parent or guardian. Parents and guardians, please tell your children not to use real names or similar information in their Radio League name.

10. Security measures

We take necessary and appropriate measures, such as encrypting communications and restricting access to the admin panel, to prevent leakage, loss, or damage of the data we collect and to otherwise manage it securely.

11. Requests for disclosure, correction, or suspension of use

In accordance with the law, users may request the disclosure, correction, suspension of use, or deletion of their own data. Please send your request via the "Contact" desk, together with the "Support ID" shown on the Settings screen.

12. Changes to this Policy

We may change this Policy in response to changes in laws or in the content of the Service. Material changes will be announced in the Service or on this page.

13. Contact

Please send questions or requests regarding this Policy to the following contact desk.

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VAULT LLC