Privacy Policy

1. Introduction

Welcome to DeltaN1. DeltaN1 helps compare your choices, signals, and outcomes over time so candidate patterns can be tracked, tested, and discussed with Coach Delta.

This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application and services. By using the Service, you agree to the collection and use of information in accordance with this policy.

2. Information We Collect

Health and Fitness Data

• Wearable Device Data: Sleep metrics, physical activity, heart rate, HRV, body measurements, and nutrition data synced from Whoop, Polar H10, manual capture, and other supported sources shown at connection time.
• Manual Health Logs: Daily ratings, subjective notes, context entries, food logs
• Biomarker Data: Lab results and health documents you choose to upload

Other Data

• User Profile: Health goals, preferences, age, gender
• Conversations: Chat interactions with the coach
• Location: Approximate location for context-aware recommendations
• Technical Data: Device info, app usage analytics, error logs
• Account Data: Email address, authentication credentials

3. How We Use Your Information

• Organizing Candidate Signals: Generate bounded coaching context based on your actual data and history
• N-of-1 Experimentation: Help design, track, and review personal experiments with uncertainty visible
• Candidate Signals: Surface trends and relationships that may be worth tracking or testing
• Coach: Provide context-aware responses and proactive coaching
• Service Improvement: Analyze aggregated, de-identified data to improve algorithms

4. Data Storage and Security

• Data stored in Supabase (PostgreSQL) with industry-standard security
• AES-256 encryption at rest, TLS/SSL encryption in transit
• JWT-based authentication with row-level security policies
• Regular security audits and audit logging
• Your health data is strictly isolated from other users

5. Data Sharing

We may share limited data with:

• Language Model Services: Anthropic Claude for natural language processing (with enterprise DPAs)
• Service Providers: Cloud hosting, analytics, payment processors
• Legal Requirements: When required by law or to protect rights and safety

6. Your Rights and Choices

• Access: View all your health data within the app
• Export: Download your data in JSON/CSV formats
• Correction: Modify your profile and health data
• Deletion: Delete specific data or your entire account
• Data Control: Choose which data types to share, revoke access anytime
• Communication Preferences: Control notifications and marketing emails

7. California Privacy Rights (CCPA)

California residents have additional rights including:

• Right to know what personal information we collect
• Right to delete personal information
• Right to opt-out of sale (we do not sell data)
• Right to non-discrimination

To exercise CCPA rights, email [email protected]

8. Data Retention

• Health data retained while your account is active
• Conversation history retained for 6 months rolling
• Account deletion: All data permanently deleted within 30 days
• Backups purged within 90 days

9. Contact Us

For questions about this Privacy Policy or our privacy practices:

Email: [email protected]

We aim to respond to all privacy inquiries within 5 business days.