Privacy Policy

HaniLab ("we", "us", "our") operates the website hanilab.app and the mobile game Line Master. This Privacy Policy explains how we collect, use, and protect your personal information when you use our services.

By using hanilab.app or Line Master, you agree to the collection and use of information as described in this policy. If you do not agree, please discontinue use of our services.

1. Information We Collect

Information you provide:

• Contact form submissions (email address, subject, message)
• Nickname and profile customisation within the game

Information collected automatically:

• IP address and approximate geolocation
• Browser type, operating system, device type
• Pages visited, time spent, referring URLs
• Game session data stored locally on your device (PlayerPrefs / local storage)
• Cookies and similar tracking technologies (see Section 4)
• Anonymous UUID (for global ranking and active-player ping, app-generated)
• Game score and level (for global ranking percentile calculation)
• 2-letter region code (from device locale, not IP address)

We do NOT collect: payment data, sensitive personal data, or biometric data.

2. How We Use Your Information

• To respond to contact form inquiries
• To operate and improve our website and games
• To display personalised advertisements via Google AdMob
• To analyse website traffic and usage patterns (Google Analytics)
• To comply with legal obligations
• For global ranking and active-player tracking via anonymous UUID
• For regional statistics using 2-letter country code from device locale

Legal basis (GDPR): Consent (advertising, analytics), Legitimate Interests (security, analytics), and Contract Performance (contact form replies).

3. Third-Party Services & Advertising (Google AdMob)

Google AdMob is a leading mobile advertising SDK operated by Google LLC. It collects your device's Advertising ID (IDFA on iOS, GAID on Android) to deliver targeted advertisements and measure ad performance across apps.

You may opt out of personalised advertising:

• Android: Settings → Privacy → Ads → Opt out of Ads Personalisation
• iOS: Settings → Privacy & Security → Apple Advertising → Personalised Ads (off)
• Web: Google Ads Settings

Other third-party services we use:

• Google Analytics – website usage analytics

We do not sell your personal data to third parties.

4. Cookies & Tracking Technologies

We use cookies and similar technologies for the following purposes:

• Essential cookies: session management, language preference (hl_lang)
• Analytics cookies: Google Analytics (_ga, _gid) – understand how visitors use our site
• Advertising cookies: Google AdMob – deliver relevant advertisements in-app

You can control cookies through your browser settings or via our cookie consent banner. Note that disabling cookies may affect website functionality.

For the EU/EEA, we obtain your consent before setting non-essential cookies.

5. Data Sharing & Disclosure

We do not sell, rent, or trade your personal information. We may share data with:

• Service providers: hosting, analytics, email delivery — bound by confidentiality agreements
• Legal authorities: when required by law, court order, or to protect our legal rights
• Business transfers: in the event of a merger, acquisition, or sale of assets

6. Data Retention

• Contact messages: retained for up to 2 years for correspondence purposes
• Analytics data: retained per Google Analytics defaults (26 months)
• Game data: stored locally on your device; deleted when you uninstall the app
• Cookies: per cookie lifetime (session to 1 year)
• UUID ping file: auto-deleted after 90 seconds of inactivity
• Ranking data (score/level/region): retained on HaniLab server for ranking calculation; anonymised

7. Your Rights (GDPR / CCPA)

Depending on your jurisdiction, you may have the following rights:

• Access: request a copy of your personal data
• Rectification: correct inaccurate data
• Erasure ("Right to be forgotten"): request deletion of your data
• Restriction: limit how we process your data
• Portability: receive your data in a machine-readable format
• Objection: object to processing based on legitimate interests
• Withdraw consent: at any time, for consent-based processing

To exercise these rights, email us at globalatomy@kakao.com

California residents (CCPA): You have the right to know what personal information is collected, to opt out of sale (we do not sell data), and to non-discrimination for exercising your rights.

8. Children's Privacy (COPPA / GDPR-K)

Line Master is a free casual physics mobile game. Based on global mobile gaming industry data, the primary users of balance and physics puzzle games are players aged 13 and above, with the largest demographic being adults aged 20–45. The game features simple controls with no violent or adult content, making it suitable for general audiences.

Our services are not directed at children under the age of 13 (or 16 in the EU/EEA). We do not knowingly collect personal information from children. If you believe we have inadvertently collected data from a child, please contact us immediately and we will delete it.

Line Master does not include in-app purchases, subscription features, or social networking functions.

9. International Data Transfers

HaniLab is based in the Republic of Korea. If you access our services from the EU/EEA or other regions with data protection laws, your data may be transferred to and processed in Korea. We use standard contractual clauses and other safeguards to ensure adequate protection.

10. Changes to This Policy

We may update this Privacy Policy periodically. We will notify you of significant changes by posting the new policy on this page with an updated date. Continued use of our services after changes constitutes acceptance of the updated policy.

11. Contact Us

If you have any questions about this Privacy Policy or our data practices:

📧 globalatomy@kakao.com
🌐 hanilab.app

We will respond to all inquiries within 30 days.