Privacy Notice

This privacy notice for Eudemonia, LLC (“Company,” “we,” “us,” or “our”) describes how and why we collect, store, use, and share your information when you use The Quantified Self mobile application and website at the-quantified-self.com (collectively, the “Services”).

Information We Collect

We collect information you provide directly, including:

• Account information (name, email address, password)
• Journal entries, habits, vices, and related data you create
• Entities (people, places, activities, injuries, etc.) you define or that are suggested by our AI features
• API keys you generate for third-party integrations

Health and Ambient Data

With your explicit permission, the app reads data from Apple Health (HealthKit), including workouts, steps, heart rate, sleep analysis, blood pressure, blood glucose, and active energy. This data is uploaded to our servers to power automations, dashboard summaries, and ambient consolidation into journal entries.

We also collect calendar event metadata (title, start/end time) if you enable the calendar ambient stream. Calendar data is used solely for automations and journal context.

Health and calendar data is stored in your account and is never sold or shared with third parties for advertising purposes.

AI-Assisted Features

Our LLM-assisted journaling feature sends your journal entry text to OpenAI's API (GPT-4o Mini) to extract entity and reference suggestions. When you use this feature:

• Your journal text and a list of your existing entities, habits, and recent entries are sent to OpenAI for processing
• OpenAI's API does not use this data for model training (per their API data usage policy)
• Suggestions are returned to the app and are not stored by us beyond the API response
• This feature requires an active subscription and the journal_entries:assist API scope

Subscription and Payment Data

Subscriptions are managed through Apple's App Store and RevenueCat. We do not directly collect or store payment card information. We receive subscription status, transaction identifiers, and entitlement information from RevenueCat to manage your access to premium features.

New accounts receive a 14-day free trial of premium features. After the trial, a subscription is required for continued access to premium features including journaling, automations, ambient streams, dashboard trends, LLM assist, and API keys.

How We Use Your Information

• Provide, maintain, and improve the Services
• Sync your data across devices via our offline-first sync protocol
• Process automations based on your configured rules and ambient data
• Generate AI-assisted suggestions when you request them
• Manage your subscription and entitlements
• Send push notifications for due habits and automation triggers (with your permission)

Data Retention

We retain your data for as long as your account is active. Deleted journal entries are soft-deleted (marked as deleted but retained for sync purposes) and permanently purged after 90 days. You may request full account deletion at any time by contacting us.

Data Security

Data is transmitted over HTTPS and stored in a PostgreSQL database hosted on Heroku. API keys are stored as bcrypt hashes; only the raw token is shown once at creation. The Services are not HIPAA or FISMA compliant.

Third-Party Services

• Heroku — application hosting and database
• RevenueCat — subscription management
• OpenAI — LLM-assisted journaling (opt-in)
• Apple HealthKit — health data import (opt-in)
• Expo / EAS — mobile app builds and updates

Your Rights

You may request access to, correction of, or deletion of your personal data at any time by emailing us. California residents have additional rights under the CCPA, including the right to know what data is collected and the right to opt out of data sales (we do not sell personal data).

Children

The Services are not intended for users under 18 years of age. We do not knowingly collect data from children.

Changes to This Notice

We may update this privacy notice from time to time. The “Last updated” date at the top reflects the most recent revision.

Contact

For questions or concerns about this privacy notice, contact us at email@the-quantified-self.com.