Privacy Policy

1. Introduction

Stellr Lab LLC ("we", "our", "us") operates the zer∅ mobile application. This Privacy Policy explains how we collect, use, and protect your information when you use our app.

2. Information We Collect

Account Information: Email address and password when you create an account.

Usage Data: Lesson progress, quiz answers, XP earned, streak data, and skill levels to personalize your experience.

Photos: Photos you submit for AI coach feedback are processed in real-time and are not stored on our servers.

Analytics: Anonymous usage analytics (Mixpanel) to improve the app. No personally identifiable information is shared.

Crash Reports: Anonymous crash data (Sentry) to fix bugs and improve stability.

3. How We Use Your Information

• Provide and personalize the learning experience
• Track your progress, streaks, and skill development
• Process AI coach feedback on your photos
• Manage your subscription
• Improve the app through anonymous analytics
• Send important account-related communications

4. Third-Party Services

We use the following third-party services:

• Supabase — Authentication and data storage
• OpenAI — AI coach photo feedback
• RevenueCat — Subscription management
• Mixpanel — Anonymous analytics
• Sentry — Crash reporting

5. Data Storage & Security

Your data is stored securely using Supabase with row-level security. We use industry-standard encryption for data in transit and at rest. We do not sell your data to third parties.

6. Your Rights

You can:

• Access your data through the app
• Delete your account and all associated data
• Opt out of analytics
• Request a copy of your data

7. Children's Privacy

Our app is not directed to children under 13. We do not knowingly collect information from children under 13.

8. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by updating the "Last updated" date.

9. Contact Us

Questions? Contact us