Privacy Policy

1. Information We Collect

Chart Tree has no sign-up or login. We do not directly collect personal information such as your name, email address, or contact details, and we do not store it on our own servers.

Your favorites, history, playlists, playback state, display and notification settings (theme, language, accent color, default country, favorites rank alerts on/off), previous chart rankings used to show rank changes, per-visit rank history of your favorite songs (last 30 days), and your cookie consent choice are stored only in your device's localStorage and are never sent to a server.

However, the third-party services described in Sections 3 and 4 below may automatically collect cookies, IP addresses, device and browser information, usage records, and similar data in order to provide the service, produce statistics, and serve ads.

2. Purposes of Use

• Providing music charts by country and operating the playback feature
• Analyzing usage statistics and improving quality (runs by default and stops if you choose "Decline" in the first-visit banner or in Settings (⚙))
• Serving ads and measuring ad performance

3. Third-Party Services We Use

Depending on our operating configuration, we may not use some of these services.

• YouTube API Services (Data API v3, IFrame Player API) — retrieving charts and playing music. By using this service, you are agreeing to be bound by the YouTube Terms of Service, and Google's Privacy Policy applies. When a video plays, YouTube may set cookies and collect usage information.
• Google AdSense — serving ads. See Section 5 for details.
• Google Analytics 4 — visit and usage statistics (runs by default and stops if you choose "Decline" in the first-visit banner or in Settings (⚙)). You can also opt out with the Google Analytics opt-out browser add-on.
• Microsoft Clarity — analysis of on-screen usage patterns such as clicks and scrolling (session replays, heatmaps); runs by default and stops if you choose "Decline" in the first-visit banner or in Settings (⚙). Microsoft Privacy Statement
• StatCounter — visitor count statistics; runs by default and stops if you choose "Decline" in the first-visit banner or in Settings (⚙). StatCounter privacy information
• Cloudflare — service hosting (web server and CDN). Server access logs (IP address, request path, etc.) may be recorded. Cloudflare privacy information

4. Cookies and Local Storage

• Essential (localStorage) — keeps features such as favorites and settings working. Always used.
• Analytics cookies — Google Analytics, Microsoft Clarity, StatCounter. Loaded by default without separate consent; you can turn them off with Decline in the banner or in Settings.
• Advertising cookies — Google AdSense and advertising partners. See Section 5.
• YouTube cookies — may be set by YouTube when a video plays.

You can switch analytics cookies between allowed and declined at any time in the app under Settings (⚙) → Analytics cookies. You can also delete cookies and site data in your browser settings.

5. Advertising and Personalized Ads

• Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this site and to other websites.
• Through Google's advertising cookies, Google and its partners can serve ads to you based on your visits to this site and/or other sites on the internet.
• You can turn off personalized advertising in Google Ads Settings. Alternatively, you can opt out of some third-party vendors' use of cookies for personalized advertising at www.aboutads.info.
• You can learn how Google uses information from partner sites on this page.

Advertising cookies are managed separately from your analytics cookie choice in Section 4; you need to set them yourself using the links above.

6. International Data Transfers

The providers of the services in Sections 3 to 5 (Google, Microsoft, StatCounter, Cloudflare, and others) may operate servers outside the Republic of Korea, and connection data such as cookies and IP addresses may be transmitted to and processed on those providers' servers. The specific destination countries and retention periods are governed by each provider's privacy policy.

7. Users in the European Economic Area (EEA), the United Kingdom, and Switzerland

If you access the service from these regions, a consent management message provided by Google may separately ask for your consent to the use of advertising-related cookies.

8. Your Choices and Rights

• You can delete data stored on your device at any time by clearing site data in your browser.
• You can withdraw your consent to analytics cookies at any time in Settings; the page reloads when you do.
• Requests to access or delete information held by third-party services follow each provider's own procedures.

9. Browser Notifications

We use browser notifications (Web Notification API) only if you explicitly allow them. You can withdraw permission at any time in your browser settings.

10. Children's Personal Information

Chart Tree does not knowingly collect information from children under 14.

11. Changes to This Policy

If the services we use or applicable laws change, we will update this policy and revise the "Last updated" date at the top.

12. Contact

For questions about this Privacy Policy, please contact: