Privacy Policy

1. Information We Collect

1.1 Session Data

The App collects the following session-related information:

• Session type (sauna, cold, contrast)
• Duration, temperature, and bench level
• Calculated sweat loss and hydration estimates
• Session timestamps and notes
• Protocol tracking and compliance

1.2 Body Metrics

To calculate sweat loss estimates, the App collects:

• Weight
• Sex
• Height (optional)

This data is stored locally on your device and used only for calculations.

1.3 Hydration Data

The App tracks daily water intake including amounts, timestamps, and beverage types.

1.4 Account Information

The App offers three sign-in options:

• Anonymous (Default): No personal information collected. Data stored locally only.
• Google Sign-In: Email and name collected for cloud backup.
• Apple Sign-In: Email and name collected for cloud backup.

1.5 Device Information

We collect a device fingerprint (hashed identifier) to:

• Track trial period status and prevent abuse
• Associate referral codes with devices (Android only)

This fingerprint does not identify you personally and cannot be used to track you across other apps.

2. Data Storage

2.1 Local Storage (Primary)

The App operates with a privacy-first, offline-first approach. Your session data, body metrics, hydration logs, and settings are stored locally on your device using SQLite. We do not have access to this data.

2.2 Cloud Storage (Optional)

If you sign in with Google or Apple, you may optionally enable cloud backup:

• Backup data is stored in Google Firebase
• Data is encrypted in transit
• Only you can access your backup data
• Cloud backup is a premium feature

2.3 Trial and Subscription Data

We store the following in Firebase:

• Device fingerprint and trial status
• Subscription status (via RevenueCat)
• Referral code data (Android only)

2.4 Data Retention

We retain your data as follows:

• Local data: Retained on your device until you uninstall the app or clear app data
• Cloud backup data: Retained until you request deletion or delete your account
• Trial/subscription records: Retained while your account exists; deleted within 30 days of account deletion request
• Device fingerprint: Retained indefinitely for trial abuse prevention (contains no personal information)

3. How We Use Your Data

We use your data to:

• Calculate sweat loss and hydration estimates
• Calculate health insights estimates
• Track session history and protocol compliance
• Provide cloud backup (if enabled)
• Manage trial periods and subscriptions
• Process referral rewards (Android only)
• Send push notifications (if enabled)
• Generate shareable session images

4. Third-Party Services

4.1 Firebase

We use Google Firebase for:

• Anonymous and social authentication
• Cloud data storage (backup)
• Trial tracking and referral tracking (referrals on Android only)

Firebase's privacy policy applies to this data processing.

4.2 RevenueCat

We use RevenueCat for subscription management:

• Receives purchase receipts from app stores
• Validates subscription status
• No payment details are stored by us

4.3 Social Platforms

When you share session images to social platforms (Instagram, Twitter, etc.), those platforms' privacy policies apply. We do not receive data from these shares.

5. Data Sharing

We do not sell or share your personal data with third parties, except:

• With service providers (Firebase, RevenueCat) as described above
• When required by law
• To protect our rights or safety
• With your explicit consent

6. Push Notifications

The App may send push notifications such as:

• Session reminders
• Streak protection alerts
• Protocol reminders
• Post-session hydration prompts

You can enable or disable notifications in App settings or device settings at any time.

7. Data Security

We implement security measures including:

• Local data stored in SQLite on your device
• HTTPS encryption for all network communications
• Secure Firebase authentication
• Hashed device fingerprints (not reversible)

Since most data is stored locally, you are responsible for your device's security.

8. Your Rights

8.1 Access

You can view all your data through the App interface.

8.2 Deletion

To delete your data:

• Local data: Uninstall the App or clear app data in device settings
• Cloud data: Email us at admin@altaflip.com with subject "Data Deletion Request"

We will process deletion requests within 30 days.

8.3 Portability

You can export your session data through the App's backup feature.

9. Children's Privacy

The App is not intended for children under 13. We do not knowingly collect information from children under 13. If you believe we have collected information from a child under 13, please contact us and we will promptly delete it.

10. Website

10.1 Website Data Collection

Our website (altaflip.com) is primarily informational and promotional. We do not use analytics tracking or collect personal information directly through the website. There are no account registrations, contact forms, or newsletter signups on the website.

10.2 Hosting and Infrastructure

Our website uses third-party hosting and security services that automatically process certain data:

• IP addresses (for security and abuse prevention)
• Request information (browser type, device, pages visited)
• Geographic location (country-level)

This data is used solely for security, performance optimization, and abuse prevention.

10.3 Cookies

Our website does not set tracking or advertising cookies. Our hosting provider may set functional cookies for security purposes (such as bot detection and security challenges). These cookies are essential for website security and cannot be disabled.

11. Changes to This Policy

We may update this Privacy Policy from time to time. Continued use of the App or website after changes constitutes acceptance of the updated policy.