Privacy Policy

1. Introduction

Haikyuudle ("we", "our", or "the site") is a fan-made, Haikyuu!!-themed daily guessing game. We respect your privacy and are committed to being transparent about how data is handled.

By using Haikyuudle, you agree to this Privacy Policy.

2. Information We Collect

a. Information You Provide

Nickname (optional): If you choose to enter a nickname it may be displayed publicly on leaderboards.

Username and PIN (optional): If you register an account to save your stats, your username and a hashed (SHA-256) version of your PIN are stored. Your raw PIN is never transmitted or stored.

b. Automatically Collected Information

We collect anonymous player identifiers, game progress, guesses, scores, and streak data to operate the game and leaderboards. This data is not linked to any personally identifiable information.

3. Cookies & Local Storage

Haikyuudle uses browser localStorage to save your game progress, streaks, and settings locally on your device. Third-party services including Google AdSense may also set cookies on your device for the purposes described in Section 5 below.

4. How We Use Information

• Operate and maintain the game
• Display leaderboards and streaks
• Improve gameplay and performance
• Prevent cheating or abuse

We do not sell or rent user data to any third party.

5. Advertising — Google AdSense

Haikyuudle uses Google AdSense to display advertisements. Google AdSense may use cookies — including the DoubleClick cookie — to serve ads based on your prior visits to this site and other sites on the internet.

Google's use of advertising cookies enables it and its partners to serve ads based on your visit to Haikyuudle and/or other sites on the internet.

You can opt out of personalised advertising by visiting Google Ad Settings. You can also opt out of third-party vendor use of cookies for personalised advertising by visiting www.aboutads.info.

For more information on how Google collects and uses data, please review Google's Privacy Policy.

6. Third-Party Services

Haikyuudle relies on third-party services including Cloudflare (hosting and delivery) and Google (advertising). These services may process limited technical data under their own privacy policies.

7. Children's Privacy

Haikyuudle is not directed at children under the age of 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided personal information, please contact us and we will delete it promptly.

8. Your Choices

You may clear cookies or localStorage at any time through your browser settings. You can opt out of personalised ads as described in Section 5. You can choose not to enter a nickname or register an account.

9. Data Retention

Anonymous game data (scores, streaks, leaderboard entries) is retained to operate the service. Account data (username and PIN hash) is retained until you request deletion. To request deletion of your data, contact us at the address below.

10. Fan-Made Content Disclaimer

Haikyuudle is an unofficial, fan-made project. All Haikyuu!!-related names and characters are the property of their respective owners and are used for entertainment purposes only.

11. Changes to This Policy

This Privacy Policy may be updated occasionally. Any changes will be posted on this page with an updated date.

12. Contact

If you have questions about this Privacy Policy or wish to request deletion of your data, contact us at:
haikyuudle@gmail.com