Privacy Policy

Shevalion was built with a simple privacy principle: your data lives on your device.

What we store locally on your phone

The following stays in your browser's local storage and never leaves your device:

• Your profile (name, age, life stage, goals, training experience)
• Cycle log (period dates, symptoms, mood, BBT, energy)
• Bloodwork values you log or scan
• Nutrition entries (meals, macros, daily totals)
• Weekly check-in summaries
• Subscription status and preferences
• Notification settings

Clearing your browser data, uninstalling the PWA, or using "Clear all my data" in Settings will permanently delete this information.

What gets sent to AI providers

When you chat with Shevalion, your messages and context (profile, current cycle phase, recent bloodwork, nutrition logs) travel to Anthropic or OpenAI to generate a response. Under their commercial API terms, conversations are not used to train models.

Cycle data privacy

Your menstrual cycle data is treated with the same on-device-only principle as everything else. We never send it to any server we control. It is only included in the AI conversation context for the duration of that conversation.

Bloodwork scanning

The "Scan" feature sends the image to our AI vision provider to extract values. The image is not stored by us.

Cookies and tracking

No third-party tracking. No analytics. No advertising networks. No data brokerage.

Account data (when you subscribe)

Stripe processes subscriptions. We retain only subscription status and a billing email. No card data is stored by us.

Children

Shevalion is for adults age 18 and older.

Contact

Privacy questions: privacy@shevalion.com