Privacy Policy

Hormone OS is built around one promise: your data belongs to you, and we collect as little of it as possible.

What we collect

• Email address — to sign you in and send your weekly report.
• Apple Health metrics — read-only. Cycle, sleep, HRV, resting heart rate, body temperature, active energy. Stored as daily aggregates in our backend.
• Daily check-in transcripts — the text of what you tell us. Audio is transcribed on your device by Apple's speech framework and is never uploaded.
• Subscription status — to gate access to the app.

What we do not collect

• Your audio recordings.
• Anything Apple Health doesn't explicitly grant us read access to.
• Tracking pixels, ad identifiers, or cross-app behavioural data.
• Your data isn't sold, isn't licensed for AI training, and isn't shared with anyone outside our infrastructure providers.

How we use your data

Your weekly report is generated by sending the previous 28 days of metrics, check-ins, and cycle data to the AI models we use (see Service providers below). Under our agreement with that provider, this data is not retained for model training. We do not send personally identifying information (your name, email, etc.) alongside the data.

Where it lives

All persistent data is stored in our backend infrastructure in the United States. Payment information is handled by our payment processor; we never see your card details. Crash reporting and product analytics tools receive anonymized events tied to a stable random ID, not your email.

Deleting your data

Settings → "Delete account" inside the iOS app erases your profile, every check-in, every report, and every HealthKit snapshot we've stored. The deletion is immediate and irreversible. Email hello@hormoneos.app if you'd rather we delete it manually.

Service providers

Operating Hormone OS means relying on third-party providers, each receiving only what its job requires:

• Our backend and hosting providers store your account and the health data described above.
• Our AI provider receives the 28 days of metrics, check-ins and cycle data needed to write your weekly report — without your name or email attached.
• Our payment processor receives your email and payment details. It receives no health data, and we never see your card number.
• Our crash-reporting and analytics providers receive anonymized events tied to a random ID. No health data, no email.

For the current list of named providers and what each one receives, email hello@hormoneos.app and we’ll send it. We keep it out of this page so it can’t go stale here while the app is still being built.

Contact

Questions, complaints, requests: hello@hormoneos.app. We answer everything within 48 hours.