Privacy Policy

Account Information: When you create an account, we collect your email address, display name, and profile photo. You may optionally provide your birth date, sex, height, weight, timezone, and country to enable personalized health insights.

Authentication Data: We use Firebase Authentication to manage your account. You may sign in via email/password, Google OAuth, or Apple Sign-In. We receive and store your Firebase user ID and authentication tokens.

Health & Wellness Data: 4sight collects health data to provide personalized insights across our four pillars: Move, Fuel, Rest, and Rise.

Data Type	Pillar	Purpose
Steps & Distance	Move	Displayed in daily Move dashboard; used to correlate activity levels with sleep quality and mood
Heart Rate & HRV	Move	Used to calculate recovery metrics, detect workout intensity zones, and measure stress response
Workouts & Active Minutes	Move	Track exercise patterns and correlate with energy levels, sleep quality, and mood trends
Calories & VO2 Max	Move	Monitor energy expenditure and cardiovascular fitness for holistic wellness scoring
SpO2 & Body Composition	Move	Track oxygen saturation and body metrics for comprehensive health monitoring
Nutrition & Macros	Fuel	Analyze dietary patterns and their impact on energy, mood, and recovery
Hydration	Fuel	Track water intake and correlate with energy levels and cognitive performance
Fasting Windows	Fuel	Monitor intermittent fasting patterns and their effects on wellness metrics
Sleep Duration & Stages	Rest	Core Rest pillar metric; analyzed for patterns and correlated with activity and mood data
Sleep Efficiency & Score	Rest	Calculate overall sleep quality and identify factors affecting rest
Recovery Metrics	Rest	Determine readiness for activity based on sleep and HRV recovery data
Mood & Energy	Rise	Track emotional wellness and correlate with sleep, activity, and nutrition patterns
Stress & Anxiety	Rise	Monitor mental wellness trends and identify stress triggers
Meditation & Breathwork	Rise	Track mindfulness activities and measure their impact on overall wellness
Dream Journal	Rest	Record and analyze dream patterns, themes, and their correlation with sleep quality
Gratitude & Journaling	Rise	Monitor journaling habits and identify behavioral patterns affecting wellness

Payment Information: If you subscribe to a paid plan, payment is processed by Stripe (web), Apple App Store (iOS), or Google Play (Android). We do not store your credit card number, bank account, or other payment instrument details. We receive and store only your subscription status, plan type, and billing period dates.

We collect health data from the following sources with your explicit permission:

• Apple HealthKit (iOS) - With your permission, we read and write health data via Apple Health. Data types include activity, heart rate, sleep, nutrition, and body measurements. HealthKit data is never used for advertising or shared with third parties beyond what is described in this policy.
• Google Health Connect (Android) - With your permission, we read health data from Health Connect, including up to 29 data types such as steps, heart rate, sleep sessions, nutrition, and body composition.
• Fitbit - If you connect your Fitbit account via OAuth 2.0, we sync data including activity, heart rate, sleep, nutrition, respiratory rate, oxygen saturation, body temperature, and weight. You can disconnect Fitbit at any time from within the app.
• Data Import - You may import historical data from compatible devices and services such as RingConn, Lose It!, and smart scales.
• Manual Entry - Data you log directly in the app, including meals, mood, journal entries, workouts, vitals, and dream diaries.

We only access data types you explicitly authorize. You can revoke access at any time through your device settings or within the 4sight app.

Your health and wellness data is stored on secure cloud servers to enable:

• Cross-device synchronization
• Long-term trend analysis and historical dashboards
• AI-powered wellness insights and correlations

Security measures we employ:

• AES-256 encryption at rest; TLS 1.3 encryption in transit
• Secure cloud infrastructure with SOC 2 compliance
• Role-based access controls — only you can view your health data
• Sensitive tokens stored in platform-native secure storage (Keychain/Keystore)
• Firebase Authentication with OAuth 2.0 and Apple Sign-In support
• Regular security audits and vulnerability assessments
• Email addresses redacted in error reports

We use your health data exclusively to:

• Provide Wellness Insights - Display dashboards, trends, and metrics across all four pillars
• Generate AI Correlations - Analyze patterns across your data to discover insights (e.g., "Your mood scores 34% higher on days you meditate before 9am")
• Calculate Wellness Scores - Aggregate data to provide daily, weekly, and monthly wellness scores
• Predictive Analytics - Forecast readiness, recovery, and optimal activity windows
• Personalized Recommendations - Suggest improvements based on your unique patterns
• Dream Analysis - Analyze dream journal entries for themes, mood trends, and sleep correlations

4sight uses artificial intelligence to generate wellness insights, pattern correlations, and personalized recommendations. This is a premium feature available to subscribers.

What data is processed by AI:

• Your health metrics (activity, sleep, nutrition, vitals) for the analysis period (typically the most recent 14 days)
• Mood, energy, and stress data
• Dream journal entries (for dream analytics features)
• Wellness scores and trends

How AI processing works:

• Your health data is sent to our backend servers, which may use third-party large language model (LLM) providers to generate insights
• AI providers process your data solely to generate a response for you and do not retain your data for their own training purposes
• AI-generated insights are cached on our servers to improve performance and reduce redundant processing
• We track token usage and processing latency for quality and cost management, but this metadata is not linked to your identity

Important: AI insights are an opt-in premium feature. Free-tier users' data is never sent to AI providers. Your data is not used to train AI models, and AI providers are contractually bound to not retain or reuse your data. You can disable AI features at any time from your subscription settings.

Service providers we work with:

• Firebase (Google) - Authentication, user management, and app analytics
• Stripe - Payment processing for web subscriptions. Stripe receives only the payment information necessary to process your transaction and is PCI-DSS compliant.
• Apple / Google - In-app purchase processing for iOS and Android subscriptions
• AI/LLM Providers - Third-party AI services that process your health data to generate wellness insights (premium feature only)
• Cloud Infrastructure - Hosting providers for our servers and databases

We may also share data in these limited circumstances:

• With Your Consent - If you explicitly choose to share data via the Data Sharing toggle in Privacy settings
• Aggregated Research - If you opt in, anonymized, non-identifiable data may be used for wellness research
• Legal Requirements - If required by law, court order, or to protect safety
• Error Reporting - When errors occur, diagnostic information (device type, OS version, app version) may be sent to our team. Email addresses are partially redacted in these reports.

You have the following rights regarding your data:

• Access — View all health data we have collected about you
• Export — Download your data in PDF, CSV, or JSON format with customizable date ranges
• Delete — Request complete deletion of all your health data at any time
• Revoke Access — Disconnect data sources and stop future collection
• Modify — Correct any inaccurate personal information
• Opt Out — Disable analytics tracking and data sharing for research via Privacy settings

To delete your data: Go to Settings > Privacy > Delete My Data within the 4sight app or web dashboard. This will permanently remove all your health data from our servers. This action cannot be undone.

To export your data: Go to Settings > Privacy > Export My Data. Choose your preferred format (PDF, CSV, or JSON) and date range (7 days, 30 days, 3 months, 1 year, or all-time).

To revoke permissions:

• iOS: Settings > Privacy & Security > Health > 4sight
• Android: Settings > Privacy > Health Connect > 4sight
• Fitbit: Disconnect within the 4sight app or manage at fitbit.com

4sight provides you with control over analytics and data sharing:

• Analytics Toggle - You can opt out of usage analytics at any time in Settings > Privacy. When disabled, we will not collect app usage patterns.
• Data Sharing Toggle - You can opt out of anonymized data sharing for research purposes. This is disabled by default.

These toggles are available in the app under Settings > Privacy and on the web dashboard under Settings > Privacy.

We retain your health data for as long as your account is active to provide trend analysis and historical insights. Specifically:

• Active Accounts: Data is retained for the duration of your account to enable long-term trend analysis
• Deleted Data: When you use the "Delete My Data" feature, all health data is permanently removed from our servers. Your account remains active.
• Deleted Accounts: All personal data is permanently deleted within 30 days of account deletion
• Inactive Accounts: Accounts inactive for 2+ years may be subject to data deletion after notification
• AI Insight Cache: Cached AI-generated insights are retained for performance purposes and are deleted when you delete your data or account

4sight is not intended for children under 13 years of age. We do not knowingly collect personal or health information from children under 13. If we learn we have collected data from a child under 13, we will delete it promptly. Users between 13 and 18 require parental consent.

If you are located in the European Economic Area (EEA), United Kingdom, or other jurisdictions with data protection laws, you have additional rights including:

• The right to request a copy of all personal data we hold about you
• The right to data portability (export in a machine-readable format)
• The right to erasure ("right to be forgotten")
• The right to restrict or object to certain data processing
• The right to withdraw consent at any time

To exercise any of these rights, contact us at [email protected]. We will respond to your request within 30 days.

For California residents: Under the CCPA, you have the right to know what personal information we collect, request its deletion, and opt out of its sale. We do not sell personal information.

We may update this Privacy Policy from time to time. When we make significant changes, we will:

• Update the "Last Updated" date at the top of this policy
• Notify you via email or in-app notification
• Request renewed consent if required for new data uses

Continued use of 4sight after changes constitutes acceptance of the updated policy.

If you have questions about this Privacy Policy or your data, please contact us: