Privacy Policy

Last updated: October 8, 2026

DeelLab (드엘, a sole proprietorship registered in Iksan, South Korea; "we") operates deellab.com and the StudyHub service. This policy explains what we collect and how we use it.

1. What we collect

• Website visitors (deellab.com): We do not use analytics cookies or tracking pixels. Our hosting provider (Cloudflare) processes standard server logs such as IP address and user agent to deliver and secure the site.
• Email contact: If you write to hello@deellab.com, we keep your email address and message to reply to you.
• StudyHub members: Access is by a shared passcode for invited study members. Notes, highlights, wrong-answer lists, and other personal study data are stored in the browser on the member's own device (local storage) and are not uploaded to our servers.

2. How we use information

Only to operate the website and service, respond to your messages, and keep the service secure. We do not sell personal information and we do not use it for advertising.

3. Sharing

We share information only with service providers needed to run the site (currently Cloudflare for hosting, DNS, and email forwarding, and Google for receiving email), or when required by law.

4. Retention and deletion

Email correspondence is kept as long as needed to handle your request. StudyHub data stored on your device can be deleted at any time by clearing your browser's site data. To ask for deletion of anything we hold, email hello@deellab.com.

5. Children

StudyHub is intended for medical students, who are adults. We do not knowingly collect information from children under 14.

6. Changes

If this policy changes, we will update the date above and post the new version here.

7. Contact

DeelLab (드엘) · Iksan, Jeonbuk, South Korea · hello@deellab.com

요약(한국어): deellab.com은 분석 쿠키를 쓰지 않습니다. 문의 메일을 보내면 답장을 위해 메일 주소와 내용을 보관합니다. StudyHub의 필기·오답 노트 등 개인 학습 데이터는 이용자 기기의 브라우저에만 저장되며 서버로 전송되지 않습니다. 개인정보를 판매하거나 광고에 쓰지 않으며, 삭제 요청은 hello@deellab.com으로 보내주세요.