Privacy Policy

✅ The short version: Hydra runs mostly on your device. We store a backup of your logs and optional account info in a secure cloud database. When you use the AI meal scanner, your meal photo is sent to an AI service only to analyze it. We never sell your personal data or share it with advertisers.

This Privacy Policy explains how Hydra Health ("Hydra", "we", "us") collects, uses, stores, and shares information when you use the Hydra mobile app and this website. By using Hydra, you agree to this policy.

1. Information we collect

Information you provide:

• Your name, age, weight, and daily goals you enter in the app (used to personalize goals and progress).
• An optional email address or phone number, if you choose to create an account for backup and cross-device sync. Creating an account is optional — the app works anonymously without one.
• Meal photos and optional descriptions you submit to the AI meal scanner.
• Challenge names, invite codes, and your display name when you create or join a challenge.
• Gym or corporate codes you redeem, if applicable.

Information collected automatically:

• A randomly generated device identifier used to save your data and sync it. This is not your device's hardware ID and does not personally identify you on its own.
• Approximate location (only if you grant permission) — used to show local weather, adjust your hydration goal for heat, and calculate prayer times. Location is not stored on our servers as a tracking history.
• Basic app usage events (e.g. a scan completed, a challenge created) to understand feature usage and improve the app.
• Subscription and purchase status, to unlock premium features.

2. How we use your information

• To provide core features: hydration and nutrition tracking, challenges and leaderboards, fasting and prayer-time reminders, and AI meal analysis.
• To back up your logs so they survive reinstalling the app or moving to a new device.
• To personalize your daily goals based on your profile and local conditions.
• To operate challenges — your display name and progress are visible to other members of challenges you join.
• To manage subscriptions and entitlements.
• To send notifications you've enabled (hydration and prayer-time reminders).

3. How your data is shared

We do not sell your personal data or share it with advertisers. We share limited data only with service providers that make the app work:

• Supabase — our secure cloud database and storage, where account info, log backups, challenges, and scan results are stored on our behalf.
• OpenAI — when you use the AI meal scanner, your meal photo (and optional description) is sent to OpenAI's vision API solely to identify the food and estimate its nutrition and hydration impact. It is not used to advertise to you.
• OpenWeatherMap and Aladhan (prayer times) — your approximate coordinates are sent to retrieve local weather and prayer times.
• Apple App Store / Google Play / RevenueCat — to process and validate subscriptions.
• Email / messaging providers — to deliver one-time sign-in codes if you create an account.
• Push notification services (Apple and Google) — to deliver reminders.

We may also disclose information if required by law, or to protect the rights, safety, and security of our users and service.

4. Account sharing & devices

If you create an account, it is intended for a single person. Signing in on a new device will sign the account out on the previously active device.

5. Data storage & retention

Most of your day-to-day data lives on your device. Backed-up logs and account data are stored on our cloud provider for as long as your account is active. You can request deletion of your account data at any time (see Contact below).

6. Children's privacy

Hydra is not directed to children under 13 (or the minimum age in your country). We do not knowingly collect data from children. If you believe a child has provided us data, contact us and we will delete it.

7. Your rights

• Access, correct, or delete your personal data.
• Use the app anonymously without creating an account.
• Revoke location or notification permissions at any time in your device settings.
• Cancel your subscription through the App Store or Google Play.

8. Changes to this policy

We may update this policy as the app evolves. We'll update the "Last updated" date above, and significant changes will be communicated in the app.

9. Contact

Questions or data requests: support@hydrahealth.app