1. Information We Collect
SubZero BJJ collects the following information:
- Email address — used for account creation and magic link authentication
- Journal entries — training notes, techniques, and session logs you create
- Chat history — conversations with the AI coach
- Scorecard data — match performance tracking
- Device information — push notification tokens (if you opt in)
2. How We Use Your Data
- Provide and improve the SubZero BJJ service
- Generate personalized AI coaching responses based on your training data
- Send authentication emails (magic links)
- Send push notifications (only with your permission)
3. Data Storage
Your data is stored securely using the following services:
- Vercel — application hosting and serverless functions
- PostgreSQL — database for user accounts, journals, and chat history
4. Third-Party Services
We use the following third-party services to provide AI features:
- OpenAI / xAI — AI language models for chat and journal analysis
- LiveKit — real-time voice communication for voice coaching mode
- Resend — email delivery for magic link authentication
Your training data may be sent to these services to generate responses. We do not sell your data to any third party.
5. Your Rights
You have the right to:
- Access your data at any time through the app
- Delete your account and all associated data by contacting us
- Export your journal entries and training data
- Opt out of push notifications at any time through device settings
6. Data Security
We use industry-standard security measures including encrypted connections (HTTPS/TLS), secure database sessions, and passwordless authentication via magic links.
7. Children's Privacy
SubZero BJJ is not directed at children under 13. We do not knowingly collect personal 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 posting the new policy on this page and updating the “Last updated” date.
9. Contact
If you have questions about this privacy policy or want to exercise your data rights, please contact us at support@subzerobjj.com.