Privacy Policy

Last updated: February 2026

1. Information We Collect

We collect the following types of information:

• Account Information: Email address, display name, and profile details you provide
• Swing Videos: Videos you upload for analysis (processed in your browser; not stored on our servers)
• Analysis Data: Swing scores, category breakdowns, and drill recommendations saved to your account
• Usage Data: Basic analytics about how you use the Service

2. How We Use Your Information

We use your information to:

• Provide and improve the swing analysis service
• Save your analysis history and practice routines
• Personalize coaching recommendations
• Communicate important updates about the Service

3. Video Processing

Your swing videos are processed entirely in your browser using on-device AI models. Videos are not uploaded to or stored on our servers. Only the resulting analysis data (scores, feedback) is saved if you choose to keep it.

4. Data Storage

Account and analysis data is stored securely using Supabase infrastructure with encryption at rest. You can delete your data at any time from the Settings page.

5. Third-Party Services

We use the following third-party services:

• Supabase: Authentication and database
• Google OAuth: Optional sign-in via Google
• Vercel: Hosting

6. Data Sharing

We do not sell, rent, or share your personal information with third parties for marketing purposes. We may share data only as required by law.

7. Your Rights

You have the right to:

• Access your personal data
• Request correction of inaccurate data
• Delete your account and all associated data
• Export your analysis history

8. Cookies & Local Storage

We use localStorage for authentication tokens and user preferences (such as theme settings). We do not use tracking cookies.

9. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of significant changes via the Service.

10. Contact

For privacy-related questions, please contact us at privacy@swingcheck.ai.