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Privacy Policy
Last updated: October 27, 2026
ProtoductAI Inc. ("we") operates the iOS app "Hearth" (the "App"). This policy describes how we handle your information.
1. Information We Collect
- Account: email address and authentication identifiers (via Clerk)
- Body & health-related data you enter: height, weight, birth year, sex, activity level, goal weight, and meal / workout / weight logs
- User content: meal photos, AI-coach memories and proposals, and text you enter
- Purchases: subscription status (via the App Store and RevenueCat; we never receive your card details)
- Security and diagnostics: the names and times of features invoked through an AI connection, and crash logs when error monitoring is enabled
- Notification device data: if you allow notifications, the Apple push notification token and the App's display language and version (used only to deliver notifications)
- Usage: in-app interaction events (for example app opens, onboarding screens viewed, logs added, purchases started or completed), the authentication identifier that links them, and a random identifier the App creates on your device for analytics. They never include your email address, text you type, or numbers such as weight or calories. We do not record your screen or infer your location from your IP address
2. How We Use It
To provide the App's features (calorie budgets, pacing, progress tracking), to sync your data with AI assistants (ChatGPT / Claude) only when you explicitly connect them, to manage subscriptions and fix bugs, and to improve the App by analyzing how it is used.
3. Sharing and Processors
We do not sell your personal data. We use Apple (purchases and push notification delivery), Clerk (authentication), Convex (database and image storage), RevenueCat (subscriptions), Cloudflare (AI-connection gateway), Sentry (error monitoring, when enabled), and PostHog, Inc. (USA; usage analytics) to provide the service. PostHog receives only the usage data described above (interaction events, the authentication identifier, and the random identifier created on your device), which we use to improve the App. It is not used for advertising or to track you across other companies' apps or websites, and we do not sell it.
4. AI Assistant Connections and Explicit Consent
An AI assistant connection is enabled only after you review the connection in ChatGPT or another supported service and complete the OAuth consent flow. At your request, body and health-related data, logs, meal photos, goals, or coach memories may then be sent to the AI provider you selected. We do not use this data to train AI models. The AI provider's privacy policy and your settings with that provider govern its processing. You can revoke access at any time from the AI provider's connected-services settings.
5. Ads & Tracking
The App shows no ads and performs no cross-app tracking (no tracking subject to App Tracking Transparency).
6. Retention & Deletion
- Account, body and health-related data, logs, images, and coach data are retained while your account remains active.
- Notification device data is removed from delivery when you sign out or delete your account, or when Apple reports the token as invalid.
- AI-connection security records do not duplicate your input or health measurements and are deleted within 30 days as a rule.
- When error monitoring is enabled, diagnostics are retained only as needed to investigate a problem and, as a rule, for no more than 90 days.
Using “Delete Account” in the App deletes the body and health-related data, logs, images, coach data, and notification device data saved by the App from Hearth's active systems, and signs you out of the App. The sign-in account (Clerk) is shared with other ProtoductAI apps, so this action does not delete it; contact us below if you want the shared account itself deleted. RevenueCat purchase records are not deleted by this action so that purchase history for other apps is not affected (contact us if you want them deleted). Copies in processor backups are erased through each processor's normal backup lifecycle. Information that must be retained by law may be kept only for the required period. This does not delete purchase history held by Apple or cancel an App Store subscription; cancel it in your Apple ID subscription settings.
7. Health Disclaimer
The App is not a medical device and does not provide medical advice, diagnosis, or treatment. Values shown are estimates based on standard formulas. Consult a physician for health concerns.