Privacy Policy

Last updated: April 18, 2026

Abstia, LLC (“we,” “our,” or “us”) operates the Abstia mobile application (the “App”). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our App.

1. Information We Collect

Account Information

When you create an account, we collect:

  • Display name
  • Email address
  • Authentication credentials (password hash — we never store plaintext passwords)

If you sign in with Google or Apple, we receive your name and email from those providers. We do not receive or store your Google or Apple password.

Profile Information

To create an account and personalize coaching, we collect the following during onboarding:

  • First and last name
  • Birthdate
  • Height
  • Preferred units (imperial or metric)
  • Gender (male, female, or prefer not to say)

You can update any of these values at any time from the profile screen.

Fasting Data

When you use the App, we collect data you provide:

  • Fast start and end times
  • Target durations and fasting schedules
  • Fast completion status (completed or cancelled)
  • Biofeedback entries: mood (great/struggling), hunger type (physical/mental), and energy level (high/low)
  • Optional notes you add to fasts

Preferences

  • Timer display mode (countdown or count-up)
  • Theme preference (system, light, or dark)
  • Notification settings and preferences
  • Timezone

Health Data (Optional)

If you choose to connect Apple HealthKit (iOS) or Google Health Connect (Android), the App reads the following metrics from your device and stores them in your Abstia account so they can be displayed alongside your fasts and used for coaching:

  • Body weight
  • Sleep duration
  • Active energy burned (calories)
  • Dietary energy consumed (calories)
  • Blood glucose

This connection is strictly opt-in, read-only, and disabled by default. The App does not write any data back to HealthKit or Health Connect. You can disconnect at any time from the App's profile settings, which stops further syncing; you can also revoke permissions directly in the iOS Health app or the Android Health Connect settings. See Section 5 (“Health Integrations”) below for the full details.

Device Information

  • Push notification token (if you enable notifications)
  • Device platform (iOS or Android)
  • Login timestamps and login count (used to surface re-engagement reminders and to diagnose sync issues)

2. How We Use Your Information

We use the information we collect to:

  • Provide and maintain the App
  • Track and display your fasting history and progress
  • Generate personalized AI coaching tips based on your fasting patterns
  • Send notifications you have opted into (target reached, ending soon, starting reminders, coaching tips)
  • Sync your data across devices
  • Improve the App

3. Data Storage and Security

Your data is stored securely in the cloud with strict access controls. Your data is fully isolated — only you can access your own records, even at the database level.

The App also stores data locally on your device using SQLite for offline access. Local data syncs with our servers when connectivity is available.

All data transmission is encrypted using TLS/SSL. We use industry-standard security practices to protect your information.

4. Data Sharing

We do not sell, trade, rent, or otherwise share your personal information with third parties, except:

  • Service providers: We use Supabase for authentication and data storage, and PowerSync for offline data synchronization. These providers process data on our behalf under strict data protection agreements.
  • Legal requirements: We may disclose information if required by law or in response to valid legal processes.

5. Health Integrations (Apple HealthKit & Google Health Connect)

Abstia offers optional integrations with Apple HealthKit (on iOS) and Google Health Connect (on Android) so the App can pull health metrics relevant to your fasting practice. These integrations are entirely optional — the App works without them, and they are turned off unless you explicitly connect them from the profile screen.

What we read

When you grant permission, the App requests read-only access to the following data types:

  • Body mass / weight
  • Sleep analysis (iOS) / Sleep sessions (Android) — used to compute nightly sleep duration
  • Active energy burned
  • Dietary energy consumed (iOS) / Nutrition records (Android)
  • Blood glucose

The App does not request write access and never pushes data into HealthKit or Health Connect.

How we use it

  • Display your latest weight, last night's sleep, today's calories burned and consumed, and your latest blood glucose reading within the App
  • Provide richer context to our AI coaching tips (for example, flagging that sleep or nutrition may be influencing your fast)
  • Track trends over time alongside your fasting history

How it is stored and shared

Health samples pulled from HealthKit or Health Connect are synced to your Abstia account on Supabase, where row-level security ensures that only you can read them. We use PowerSync to keep the data available offline on your device. We do not sell this data, use it for advertising or marketing, share it with third parties for their own purposes, or use it for any purpose unrelated to providing the Abstia fasting experience to you. Aside from the infrastructure providers listed in Section 4, no third party receives your health data.

Your control

  • Connect or disconnect Health at any time from the App's profile screen. Disconnecting stops all future syncs.
  • Revoke individual permissions directly in the iOS Settings > Privacy & Security > Health pane or the Android Health Connect settings.
  • Delete previously synced samples by deleting your Abstia account (see Section 8), which removes all associated health records.

Apple HealthKit disclosure

As required by Apple, we confirm: Abstia does not use HealthKit data for advertising, marketing, or other use-based data mining purposes other than improving health, medical, and fitness management, or for the purpose of health research. HealthKit data is never sold, and is never disclosed to third parties for their own use.

6. Third-Party Authentication

If you choose to sign in with Google or Apple, those services provide us with your basic profile information (name and email). Their respective privacy policies govern how they handle your data:

7. Data Retention

We retain your data for as long as your account is active. If you delete your account, we will delete your personal data within 30 days. Anonymized, aggregated data may be retained for analytics purposes.

8. Your Rights

You have the right to:

  • Access the personal data we hold about you
  • Correct inaccurate data
  • Delete your account and associated data
  • Export your data in a portable format
  • Opt out of any or all notifications at any time through the App settings

To exercise these rights, contact us at privacy@abstia.com.

9. Children's Privacy

The App is not intended for children under the age of 13. We do not knowingly collect personal information from children under 13. If we become aware that we have collected data from a child under 13, we will delete it promptly.

10. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of material changes by posting the updated policy in the App or on our website. Your continued use of the App after changes are posted constitutes acceptance of the revised policy.

11. Contact Us

If you have questions about this Privacy Policy or our data practices, contact us at: