Privacy Policy

Effective date: October 6, 2026

Chalna ("the Service") values your privacy and follows applicable laws. The Service offers brain games and toddler play that anyone can use instantly, with no sign-up or login required. Here is our privacy policy.

1. Personal Information We Collect

The Service does not collect personal information such as your name, email, or phone number. There is no sign-up, login, or payment, so no personal information is required to play.

2. Information Stored on Your Device

Game records, attempt counts, Gomoku and Stone Flick results, and your language choice are never sent to a server. Information that needs to be kept (such as your language choice and Gomoku/Stone Flick results) is stored only on your device (in your browser's localStorage); other game records disappear when you close the page.

No one who runs this Service can view this information.
Clearing your browser data or switching devices or browsers will reset your records.
When you tap "Save picture" in Coloring, the image file is saved directly to your device and is not sent to any server.
Clock Play reads your device's current time only to show it on screen; it is never sent anywhere.
Voice guidance in Toddler Play uses the speech feature built into your device or browser. Some browsers may process the guidance sentence (e.g., "Can you find the red balloon?") on the browser provider's servers to turn it into speech; these sentences contain no personal information.
Chalna Timer settings (city, timer length, break schedule, etc.) and Sign Board messages are stored only on your device. In a link made with the Sign Board's "Copy link", the message sits only after the # in the address, which is never sent to Chalna's servers or to usage statistics (Google Analytics). However, the recipient and any messaging or SMS service carrying the link can see the message, so please do not include personal information.

3. Advertising and Cookies

The Service may show ads through Google AdSense. Google and other third-party ad providers may use cookies to show personalized ads.

Google may use cookies (such as the DoubleClick cookie) to show ads based on your visits to this and other websites.
You can turn off personalized ads in Google Ad Settings: adssettings.google.com
To stop other ad providers from using cookies, visit the site below: aboutads.info

The Service includes a Toddler Play section for children aged 7 and under. No ads are shown on Toddler Play screens; ads may appear only on other screens (brain training and casual games).

4. Third-Party Services

The Service uses the following external services:

Google Fonts — provides the web fonts used on this site.
Google AdSense — used to display ads.
Browser speech synthesis — Used for voice guidance in Toddler Play.
Google Analytics — Used to understand overall usage, such as visit counts and which games are played most. It does not collect information that identifies you, such as your name or contact details, and it uses cookies for these statistics. No usage statistics are sent from Toddler Play screens. You can opt out by blocking cookies in your browser or using the Google Analytics opt-out browser add-on.

Each service operates under its own privacy policy.

5. Children's Privacy

The Service does not collect any personally identifiable information from anyone, including children, and does not collect personal information from children under 14. Toddler Play screens contain no ads or external links, and we recommend that children play with a parent or guardian.

6. Changes to This Policy

This policy may be updated due to legal changes or changes to the Service. Any changes will be posted on this page.

7. Contact

For privacy-related questions, please contact our privacy officer:
Privacy officer: Chalna operator
Email: skwljqa@naver.com