Privacy Policy

1. Overview

This Privacy Policy explains how 새로풀기 (“the App”) collects, uses, and protects your personal information.

2. Information we collect

• Email address — Provided by Apple during Sign in with Apple, including private relay emails. Used for authentication and account identification.
• User ID — A unique identifier provided by Apple. Used for syncing and account management.
• User content — The passages, questions, choices, and answers transcribed from your photos, the notes you write, your folders and tags, and your practice history. Used for syncing across devices.
• Figure crops — Illustrations, photos, and diagrams that cannot be rendered as text are stored as cropped images so the question still works as printed. They are kept in a private bucket only you can read.
• AI processing data — The page photo you submit when creating questions, and the question content and query you submit when asking for an explanation. Sent to the Google Gemini API. The photo itself is not stored (see section 3).
• Usage analytics — Anonymous usage events (for example, which features you use and how often) along with app and OS version, used only to analyze and improve the App. Tied to a randomly generated install identifier, and to your account identifier when you are signed in. Never used for advertising or tracking.

3. Information we do not collect

• The original page photos — They are never stored on our servers. A photo is used only while your request to create questions is being processed, and is discarded once the response is returned. The only images retained are the figure crops described in section 2.
• Location data
• Contacts
• Search or browsing history
• Health or fitness data
• Advertising identifiers (the App shows no ads)

4. Third-party services

• Apple — Sign in with Apple: Handles user authentication. Apple's privacy policy applies.
• Supabase — Authentication, sync, and figure storage: Data is stored on Supabase cloud servers in the Seoul region, South Korea.
• Google Gemini — Turning photos into questions, and AI explanations: The photos and question content described in section 2 are sent to the Google Gemini API. Google's data handling policy applies.

The App shows no ads and uses no third-party analytics SDKs (such as Firebase); usage analytics is processed only on servers we operate, and we do not sell or share your data for marketing purposes.

5. Nothing is shared with other users

The App has no feature for sharing or publishing your questions to anyone else. Stored questions and figures are readable only from your own account, enforced by row-level security.

6. Data retention

Your data is retained until you delete your account. Upon account deletion, your questions, practice history, folders, tags, figure images, and authentication information are permanently removed. Usage analytics is kept only in aggregate, with the identifier pointing to you stripped out.

7. Your rights

• Access — View all your questions and practice history within the app.
• Export — Export any set of questions as a printable PDF worksheet.
• Deletion — Delete individual questions and practice records at any time, or your whole account via Me → Delete Account, which takes effect immediately.

8. Security

All communication is encrypted via HTTPS. Requests to create questions or fetch explanations are verified using user authentication tokens. The App does not store passwords, as it only supports Sign in with Apple.

9. Children's privacy

The App is not directed at children under the age of 13, and we do not knowingly collect personal information from children.

10. Changes to this policy

This policy may be updated from time to time. Changes will be reflected by updating the “Last updated” date above.

11. Contact

support@hyunsanglabs.com