Privacy Policy
Last updated: June 14, 2026
Overview
underlines. is developed by realnumber. This privacy policy explains how we collect, use, and protect your information.
Information We Collect
Account Information
- Email address (for authentication)
- Display name (chosen by you, visible to other users)
User Content
- Lines/quotes you save
- Photos you attach to lines
- Source information you provide
Usage Data
- We do not collect analytics or tracking data
- We do not use third-party analytics services
How We Use Your Information
- Authentication: Your email is used solely to create and manage your account via Firebase Authentication
- App Functionality: Your lines, photos, and profile are stored to provide the core app experience
- Social Features: Lines you mark as public are visible to other users along with your display name
Data Storage
- Account and content data is stored in Google Firebase (Firestore)
- Photos are stored in Cloudflare R2
- Data is transmitted over encrypted connections (HTTPS)
Data Sharing
- We do not sell your data to third parties
- We do not share your data with advertisers
- Lines you mark as public are visible to other authenticated users
- We may share data if required by law
Your Rights
- Access: You can view all your data within the App
- Deletion: You can delete all your data using "Clear All Data" in Settings
- Account Deletion: Contact us to request full account deletion
Third-Party Services
Children's Privacy
The App is not directed at children under 13. We do not knowingly collect information from children under 13.
Changes
We may update this policy from time to time. Changes will be reflected by updating the date above.
Contact
Email: madeinwinter@gmail.com