Privacy Policy

Last updated: September 11, 2026

This policy explains how Nitta Quiz collects, uses, and shares information through the Nitta Quiz app, website, and related services. It also explains your choices and what happens when you delete your account.

1. Contact

For privacy questions, complaints, or requests about your information, email privacy@nittaquiz.com. For help using Nitta Quiz, email support@nittaquiz.com or visit our support page.

2. Information we collect

2.1 Account and profile information

You can sign in with an email one-time code, Google, or Apple. Email sign-in uses your email address. Social sign-in supplies a provider account identifier, authentication tokens, and the account information the provider makes available, such as an email address, name, or profile image. Apple may supply a private relay email address if you choose Hide My Email. We use this information to authenticate your account. We do not receive your Google or Apple password. For Apple-linked accounts, authorization information can be stored for revocation during account deletion.

We store your account identifier, public username, and profile settings. Depending on what you provide, these include an avatar, short bio, country, gender, preferred language, and selected interest categories. The app stores preferences such as sound, vibration, data saver, and notifications. Sign-in includes an age-eligibility declaration, and account records include an age-confirmation field. We do not collect a date of birth or verify your age through identity documents.

2.2 Gameplay and social activity

We store quiz and game activity, answers, scores, response times, progress, achievements, rankings, streaks, rewards, and in-game balances and transactions. Multiplayer records include participants, challenges, answers, results, and match status. Social records include friendships, friend requests, and blocked users.

Your public profile can show your username, avatar, country, and join date. Competitive features can show scores, results, and ranking. A public profile link can be opened without signing in. Opponents see information about your participation and results in shared games. We do not display your account email address as part of your public profile.

2.3 Support, reports, and moderation

We collect the messages and files you send through email, feedback, or reporting tools. In-app feedback can include screenshots, app and device details, and whether you allow us to contact you. Reports can include the reported user or question, a reason, and your description.

If you request iPhone release updates on the website, we store your email address, selected language, requested platform, and signup time to send those updates.

We use report records and moderation history to investigate abuse and enforce our terms. Moderation records can include account identifiers, the action and reason, and the previous username, bio, or avatar reference when content is removed or replaced.

2.4 Device information and notifications

Our services and SDKs receive technical information such as IP address, device model, operating system, app version, language, request details, and diagnostics. Sentry receives crash and error information. Hosting, authentication, and other providers may keep their own service logs.

If you enable push notifications, we store a push token and notification preferences. Notification delivery uses Expo and Apple's or Google's push services. You can manage notifications in Settings → Notifications and in your device settings. Sign-out attempts to unregister the device's push token. If that request fails, a token can remain on the server.

We do not request GPS location. Your selected country and information such as IP address can indicate approximate location.

2.5 Advertising and website analytics

Google AdMob and its advertising partners process information for ad delivery, fraud prevention, measurement, and, where permitted, personalization. This can include IP address, device and SDK identifiers, ad interactions, and consent choices. On iOS, access to the advertising identifier, IDFA, requires App Tracking Transparency permission. Other ad processing can occur without IDFA, subject to the applicable consent choices.

With your permission, the website uses Vercel Web Analytics and Google Analytics to measure visits and usage. Google Analytics can use cookies and browser identifiers. See our Cookies & Tracking Policy for the technologies and available controls.

2.6 Real-money purchases

The current release does not offer real-money purchases or subscriptions. In-game balances and transactions describe gameplay rewards and spending within the game, not payments to us. We do not collect payment card details through the app.

3. How we use information

We use information to authenticate you, maintain your profile, save progress, operate games and social features, calculate rankings, and deliver rewards. We also use it to answer support requests, send sign-in messages and enabled notifications, investigate reports, prevent abuse, diagnose errors, measure website usage, and deliver and measure ads. We process privacy and account-deletion requests and respond to applicable legal obligations.

We do not sell personal information for money. Advertising partners' processing may constitute "sharing" or a "sale" under some privacy laws. See Sections 6 and 11 for advertising choices and privacy requests.

4. Legal bases for processing

Where applicable data-protection law requires a legal basis, the basis depends on the purpose. Providing the account and gameplay service involves performance of our agreement with you. Security, abuse investigation, support, and diagnostics involve our interests in operating and protecting the service, subject to your rights. We rely on consent where required for advertising, device storage, or tracking, and on legal obligations where processing is required by law.

Using the app or accepting the terms does not replace a required advertising or tracking consent. You can withdraw consent through the controls described below or contact us about processing based on consent.

5. Who receives information

The service uses these providers:

• Supabase for authentication, account data, database records, and file storage.
• Google and Apple when you use their sign-in methods, and for app distribution through their stores.
• Google AdMob and its advertising partners for ads, measurement, and privacy messages through Google's User Messaging Platform. The consent form, where available, provides information about participating partners and their purposes.
• Sentry for app crash and error reporting.
• Expo, Apple Push Notification service, and Firebase Cloud Messaging for push notification delivery.
• Vercel for website hosting and Web Analytics, and Google Analytics for website usage measurement.
• Email providers for sign-in messages and communications with support.

Providers receive the information needed for their roles. Some, including identity and advertising providers, also process information under their own policies. Google's advertising practices are described in How Google uses information from sites or apps that use its services. See also Supabase privacy information, Sentry privacy information, Expo privacy information, Vercel privacy information, and Apple privacy information.

Other people can see the public and shared-game information described in Section 2. We may disclose information when required by law or necessary to address fraud, abuse, or threats to people's safety. A transfer of the service to another operator may involve the account records needed to continue operating it, subject to applicable privacy obligations.

6. Advertising and your choices

The app can show banner, interstitial, and optional rewarded ads. Rewarded ads offer the reward shown in the app when the required ad event completes. Ad availability is not guaranteed.

The app uses Google's User Messaging Platform to check whether ads may be requested and to show any required privacy form. The choices shown depend on your region and Google's configuration. Where the privacy-options entry is available, open Settings → Ad preferences to revisit your choices. Changing consent pauses new ad requests while the result is checked and replaces previously loaded ads. Depending on that result, ads may be limited or unavailable. An ad already on screen may finish.

On iOS, App Tracking Transparency is separate from Google's privacy form. Denying tracking prevents access to IDFA but does not disable all advertising or all data needed to deliver and measure ads. You can change the tracking permission in iOS Settings → Privacy & Security → Tracking. On Android, use your device's advertising privacy controls. Menu names vary by device and operating-system version.

The website asks before loading Google Analytics or Vercel Web Analytics. You can accept or reject analytics and change your choice through Cookie settings on the Cookies page. Rejecting analytics leaves website features available. Withdrawing permission stops future analytics collection and clears accessible Google Analytics cookies; it does not erase data previously collected. Browser controls and the Google Analytics opt-out tool are described in the Cookies & Tracking Policy. Contact privacy@nittaquiz.com for help with an advertising or tracking privacy request.

7. Age eligibility

Nitta Quiz requires users to be at least 13 and to meet any higher minimum age that applies where they live. Users below the age of majority also need the parent or guardian permission required by our terms. The sign-in screen asks users to confirm eligibility. This is a declaration, not verified age screening or a parental-consent service.

The service is not intended for children below its minimum age. If you believe someone below that age has provided personal information, contact privacy@nittaquiz.com so we can investigate and address the account and its data.

8. Retention and account deletion

8.1 Account deletion and confirmation

You can request deletion in Settings → Account settings → Danger zone → Delete account, or on our account deletion page.

A request starts a 15-day recovery window. To cancel during that window, sign in and choose Keep my account. Signing in alone does not cancel deletion. After the window ends, the account becomes eligible for the deletion process, which runs hourly. Processing failures can delay completion. The date shown in the app is an eligibility time, not a guaranteed completion time.

The request provides a private status link that you can save. Open that link to check whether deletion is pending, completed, or cancelled. Anyone with the link can view its status, so keep it private. We do not send an automatic completion email. A completed status confirms completion of the account-deletion process, subject to the retained records described below.

8.2 What is removed and what can remain

• Account and linked game data. The deletion process removes your authentication account and its linked profile, progress, wallet, inventory, and social records. This prevents you from signing back into that account. Deleting Nitta Quiz does not delete your Apple or Google account. The status page can also report whether Apple authorization was revoked or requires action in your Apple account.
• Deletion receipt. While pending, the status receipt is linked to the account. After completion or cancellation, it keeps the random link token, status, relevant timestamps, and Apple authorization-revocation outcome without an account identifier, name, or email address. It expires after 30 days and is removed by scheduled processing. An expired or unavailable link is not proof of completion.
• Feedback and reports. Feedback and some report records can remain after their link to your account is removed. Their text and attachments may still contain information you supplied, so removal of the account link does not make that content anonymous.
• Moderation history. Records of moderation actions can remain after account deletion, including the target account identifier, action, reason, and prior profile content or file reference.
• Release-update requests. The website signup list is separate from app accounts and remains after account deletion. Contact privacy@nittaquiz.com to withdraw your request and ask us to remove that signup.
• Uploaded files. Removing a profile or database reference does not guarantee that every stored avatar or feedback attachment has been erased. File copies can remain in storage or caches until separate removal.
• Provider logs, backups, and support email. These do not all follow the account-deletion schedule. Their retention depends on the provider, configuration, and the purpose of the record. The service does not apply a single automatic deletion period to feedback, moderation history, uploaded file copies, and support correspondence.

Contact privacy@nittaquiz.com to request removal of remaining personal information or ask about a specific record. We assess requests under applicable law, including any obligation to retain particular information.

9. Security

The service uses HTTPS for network requests and access controls for account and administrative functions. Session information is stored on your device to keep you signed in. Keep your device, email account, and any linked sign-in account secure. No service can guarantee that stored or transmitted information is completely secure.

10. International processing

Providers may process information in the United States or other countries. Their locations and applicable transfer arrangements depend on the service and your region. Contact privacy@nittaquiz.com for information about the providers and safeguards relevant to your data.

11. Your privacy rights

Depending on where you live, you may have rights to access, correct, delete, or receive a copy of your information, restrict or object to processing, withdraw consent, or complain to a data-protection authority. California residents may also have rights to know the categories of information collected, opt out of sale or sharing as defined by applicable law, and receive equal service when exercising privacy rights.

You can edit your profile in Settings → Account settings, manage notifications in Settings → Notifications, and use the deletion and advertising controls described above. Email privacy@nittaquiz.com for other requests, including an opt-out request. We may need to verify that a request concerns your account. We respond within the time required by applicable law. Withdrawing consent does not affect processing that occurred before withdrawal.

12. Changes to this policy

We update the date above when this policy changes. Where applicable law requires notice or consent for a change, that requirement applies. You can switch between English and Spanish using the language selector on this page.

13. Contact

• Privacy: privacy@nittaquiz.com.
• Support: support@nittaquiz.com.
• In-app feedback: Settings → Send feedback.