Privacy Policy

Last updated: May 6, 2026
Your privacy is our top priority. Private Female Biomarker is built on a simple principle: your health data belongs to you and stays on your device. This policy explains exactly how we handle your information.

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Data Stored on Your Device

Private Female Biomarker stores all your health records locally on your iPhone using Apple's platform storage mechanisms. This includes:

Important: The app does not require you to create an account. No cloud account. No email login. Your data is stored exclusively on your device.

Permissions & Access

The app requests specific permissions only for features you actively use:

Camera

To photograph lab panels directly in the app. This is optional—you can import existing photos instead.

Photo Library

To import lab images or PDFs you've already saved. The app accesses only the files you explicitly select.

File Access

To import lab reports in PDF format. Again, you choose which files to import.

Notifications

To send you local reminders for upcoming lab draws. These notifications are generated on your device; we cannot access notification settings.

On-Device Processing

When you photograph a lab report, the app uses Apple's Vision framework to extract text and data directly on your iPhone. This happens entirely on your device:

Third‑party AI Service (OpenAI)

The "AI explanation" feature is optional. When you tap Create explanation on a lab draw, the app shows a confirmation alert and only after you tap Send to OpenAI transmits the following through our backend proxy (a Cloudflare Worker that exists solely to keep our OpenAI API key off your device): marker names, values, units, reference ranges, draw date, source type, and the optional women's‑context fields you set on that draw (cycle phase, life stage, hormone context). The following are never sent: the source PDF or photo, the OCR text, the lab name, your notes, your name, your email, or any account or device identifier. The app has no user account system. The recipient is OpenAI (https://openai.com), which processes the request under the OpenAI API Data Usage Policies (https://openai.com/policies/api-data-usage-policies); API inputs are not used to train OpenAI's models by default, providing protection equivalent to what this policy describes. We do not retain request bodies on the proxy.

Exports and Sharing

When you choose to export or share your data, you control exactly what leaves your device:

Data only leaves your device through actions you explicitly initiate (email, file share, etc.).

Payments & Subscriptions

All subscription and purchase management happens through Apple's App Store:

Analytics, Tracking & Third‑Party SDKs

Zero analytics. Zero tracking. Zero third‑party SDKs except OpenAI. Private Female Biomarker does not:

Security

Your data security is paramount:

Age & Children

Private Female Biomarker is intended for adults ages 18 and older. Do not use this app if you are under 18.

Medical Disclaimer

Important: Private Female Biomarker is a personal health record-keeping tool. It does not provide medical advice, diagnosis, prognosis, or treatment recommendations. Never rely solely on this app for medical decisions. Always consult a qualified healthcare provider about your lab results and health concerns.

Contact & Questions

Have privacy questions or concerns? We're here to help:

Email: namtran1985vn@gmail.com

We aim to respond to privacy inquiries within 48 hours.

Policy Changes

We may update this policy occasionally. If we make material changes, we'll notify you by updating the date at the top of this page and, if necessary, through an in-app notification.