Privacy Policy

App: Zentner Labs Health
Effective date: October 9, 2026

Overview

Zentner Labs Health is a private, personal application operated by Zentner Labs (“we”). It is used only by its owner to access their own Google account data. It is not offered to the public. This policy explains what Google user data the app accesses and how that data is used, stored, and protected.

Google user data accessed

With the account owner's explicit consent through Google's OAuth consent screen, the app requests the following access:

• Google Health API — read-only scopes for:
  • Health metrics and measurements (e.g., heart rate, heart rate variability, weight, body fat);
  • Sleep data;
  • Activity data (e.g., steps).
• Google Cloud Platform (cloud-platform) scope, used only to administer the app's own Google Cloud project (for example, managing the project's configuration and API subscriptions). It is not used to access any other user's data or resources.

The app does not request write access to health data and does not access Gmail, Contacts, Drive files, or any other Google data beyond what is listed above.

How the data is used

Google user data is used solely to generate the owner's own daily health reports for their personal coaching assistants. The data is not used for any other purpose.

Storage and security

Data retrieved from Google is stored only on the owner's private machine and is protected by reasonable technical safeguards. OAuth tokens are kept private and are never published.

Sharing

• Google user data is never sold.
• Google user data is never shared with or transferred to third parties, except as necessary to produce the owner's own reports at their direction, or as required by law.
• Google user data is never used for advertising, including personalized, retargeted, or interest-based advertising.
• No humans other than the account owner read the data.

Limited Use disclosure

Zentner Labs Health's use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements.

Retention and deletion

Data is retained only as long as needed to produce and review personal reports. The account owner may delete locally stored data at any time.

Revoking access

You can revoke the app's access to your Google account at any time at https://myaccount.google.com/permissions. After revocation, the app can no longer access any Google data.

Cookies and tracking

This website uses no cookies, analytics, tracking, or third-party scripts.

Changes

If this policy changes, the updated version will be posted on this page with a new effective date.

Contact

Questions about this policy: admin@zentnerlabs.com