Privacy Policy

1. Introduction

This Privacy Policy explains how KnoBall (“KnoBall,” “we,” “us,” or “our”) collects, uses, shares, and protects information when you use the KnoBall mobile application and related services (the “App”). By using the App, you agree to this Policy. If you do not agree, do not use the App.

Contact: knoball4@gmail.com. A current copy of this Policy is always available at https://knoball-legal.web.app/privacy and in the App (Settings → Privacy policy). Terms of Use: https://knoball-legal.web.app/terms. Support and account deletion: https://knoball-legal.web.app/support.

2. Who this App is for (ages 13+)

KnoBall is designed for users 13 years of age and older, consistent with our App Store age rating. We do not knowingly collect personal information from children under 13. If you believe a child under 13 has created an account, contact knoball4@gmail.com and we will delete the account and related data. Users under 18 should review this Policy with a parent or guardian.

3. Information we collect

Account and profile (registered accounts): email address; password (stored by our authentication provider, not in plain text on our servers); username/display name; date of birth; optional profile photo; optional bio; optional social media handles you choose to add. If you use Sign in with Apple, Apple may provide a real or private-relay email. If you use Google Sign-In, Google provides a name, email, and identifier token.

Guest play (Play now): we create an anonymous Firebase authentication identifier so you can load quiz content and play CPU Duels. Guest Daily Quiz results are stored locally on your device and are not submitted to leaderboards unless you later create a registered account. We do not ask guests for email, username, or date of birth.

Onboarding preferences you choose before or while creating an account (for example ball-knowledge level, favorite sport, and how you heard about us).

Gameplay: Daily Quiz answers and results (registered accounts), scores, total quiz times, streaks, leaderboard placements, Duel progress (including CPU and friend matches synced to your account), crowns, duel lives usage, coin/powerup inventory, and related match history.

Purchases and subscriptions: whether you have an active KnoBall Pro subscription or purchased virtual items, and store transaction identifiers needed to restore purchases. Payment card details are processed by Apple or Google, not by KnoBall. Guest/anonymous buyers are not asked for email or username at checkout; purchases are tied to your App Store / Play account and an anonymous app identifier until you optionally create a registered account.

Device and usage: device type, operating system, app version, approximate usage events, crash/diagnostic data, and a push notification token if you enable notifications.

Advertising (free accounts): coarse device data and limited ad-related identifiers that Google AdMob may use to deliver and measure non-personalized ads. We do not request access to the iOS advertising identifier (IDFA) or show Apple’s App Tracking Transparency prompt.

Analytics: event names such as quiz started/completed, sign-in, and similar product analytics via Google Firebase Analytics.

Communications: messages you send us (such as support emails).

4. How we use information

We use information to: create and secure your account (or anonymous guest session); run Daily Quiz, Duels, and leaderboards; sync progress across sessions and devices when you are signed in with a registered account; publish and deliver each day’s authored Daily Quiz set; prevent cheating and abuse; provide customer support; process and restore subscriptions and in-app purchases; send optional product notifications you allow (including when the Daily Quiz goes live at 9:30 AM Eastern and Duel turn reminders); show interstitial ads to free accounts after certain Duel misses; optionally prompt you to rate the App on the App Store or Play Store; analyze and improve performance and features; and comply with law. Guest Daily Quiz scores stay on your device unless you create an account. We do not sell your personal information.

5. Advertising

If you are not a KnoBall Pro subscriber, we may show third-party interstitial ads from Google AdMob after certain actions (currently after a missed Duel question when you continue). AdMob and its partners may collect coarse device data and limited identifiers to deliver and measure ads. We always request non-personalized ads where the SDK allows. We do not track you across other companies’ apps and websites for advertising, and we do not show Apple’s App Tracking Transparency prompt. You can limit ad personalization in your device settings.

Google’s policies: https://policies.google.com/privacy and https://policies.google.com/technologies/ads. KnoBall Pro removes these ads.

6. Analytics

We use Google Firebase Analytics to understand how the App is used (for example, whether a quiz was started or completed). Analytics data is processed by Google under its terms. You can reset advertising/analytics identifiers in your device settings. We do not use analytics to sell your information.

7. How we share information

Service providers that process data on our behalf:
• Google Firebase (authentication, database, cloud functions, analytics, and related infrastructure) — https://firebase.google.com/support/privacy
• Google AdMob (ads for free accounts) — https://policies.google.com/privacy
• Superwall (subscription paywalls) — https://superwall.com/privacy
• Apple (Sign in with Apple, App Store purchases, push delivery, and optional in-app rating prompts on iOS)
• Google Play (purchases on Android; Google Sign-In; optional in-app reviews)
• Expo (push notification tokens when you enable notifications)

Other players: Your username, avatar (if set), leaderboard scores and times, and public profile details you choose to show may be visible to other users.

Legal: We may disclose information if required by law, legal process, or to protect the rights, safety, or security of KnoBall, our users, or the public.

Business transfers: If we are involved in a merger, acquisition, or asset sale, information may be transferred as part of that transaction with appropriate notice where required.

We do not sell personal information and we do not share personal information for cross-context behavioral advertising.

8. Tracking

KnoBall does not track you across other companies’ apps and websites for advertising. We do not request Apple’s App Tracking Transparency permission and we do not access the iOS advertising identifier (IDFA) for personalized ads. Ads shown to free accounts are requested as non-personalized where the ad SDK allows. If our practices change, we will update this Policy and App Store privacy disclosures.

9. Permissions

Photos: If you set a profile picture, the App asks for access to your photo library. Photos stay on your device until you choose one to upload as an avatar. Camera and microphone are not required.

Notifications: Optional. If you allow them, we store a device push token to send product reminders, including when the Daily Quiz goes live at 9:30 AM Eastern and Duel turn / challenge alerts. You can turn notifications off in system settings.

10. Data retention

We keep account and gameplay records while your account is active and for a reasonable period afterward as needed for leaderboards, security, backups, dispute resolution, and legal obligations. If you delete your account, we will delete or de-identify personal data associated with it within a reasonable time, except where we must retain limited information (for example fraud prevention, legal compliance, or aggregated analytics that no longer identify you).

11. Your choices and rights

You may update profile information in the App. You may turn off push notifications and limit ad tracking in your device settings. You may request access to or correction of your personal information, or deletion of your account, by contacting knoball4@gmail.com from the email associated with your account, using Settings → Delete account, or visiting https://knoball-legal.web.app/support.

Depending on where you live (for example California or other U.S. states with privacy laws, or the EEA/UK), you may have additional rights to know, delete, or opt out of certain processing. We will not discriminate against you for exercising privacy rights. To make a request, email knoball4@gmail.com. We do not sell personal information.

12. Account deletion

Apple and Google require a way to delete your account. To delete your KnoBall account and associated personal data:
1. In the App: Settings → Delete account, or
2. Email knoball4@gmail.com from your account email with the subject “Account deletion”, or
3. Follow the instructions at https://knoball-legal.web.app/support.

We will verify the request and delete or de-identify personal data as described in Retention, typically within 30 days unless a longer period is required by law or needed to complete ongoing transactions. Deleting your account does not cancel an active paid subscription; cancel that separately in Apple ID or Google Play subscription settings to avoid further charges.

13. Security

We use reasonable administrative, technical, and organizational measures to protect personal information (including encrypted transport and access controls via our cloud providers). No method of transmission or storage is 100% secure. Please use a strong unique password and keep your device secure.

14. International users

KnoBall is operated from the United States. If you use the App from another country, you understand that your information may be processed in the United States and other locations where our providers operate, which may have different data-protection rules than your home country.

15. Changes to this Policy

We may update this Privacy Policy as the App evolves. We will post the updated Policy in the App and at https://knoball-legal.web.app/privacy and revise the effective date. Material changes may also be highlighted in the App or by email when appropriate. Continued use after an update means you accept the revised Policy.

16. Contact

Privacy questions or requests: knoball4@gmail.com. Support and account deletion: https://knoball-legal.web.app/support. Terms of Use: https://knoball-legal.web.app/terms.