Your data

How to view, export, modify, or delete the data Bivryn collects — and how to control the way it's used and shared.

1. View everything Bivryn knows about you

Inside the app, every category of data Bivryn holds is browsable:

• Profile — name, biological characteristics, conditions, family history, active goal. Open Profile to view or edit.
• Logs — supplements, medications, meals, mood, notes, symptoms. Open Quick Log → View recent logs.
• Blood work — uploaded panels and per-marker history. Open Profile → Blood Work.
• Body Memory — the longitudinal timeline of milestones Bivryn has recorded. Open Library → Body Memory.
• Triggers + Discoveries — patterns Bivryn has learned from your data. Open Profile → Your Patterns, or Discoveries from the tab bar.
• Cached AI interpretations — every Body State, Why Today, Discoveries, Weekly Recap response Bivryn has generated.

2. Edit or correct your data

Every screen that displays data also lets you edit it:

• Profile fields (name, age, sex, height, weight, conditions, family history): Profile → Edit profile.
• Logs: tap any log entry in Today's Logs to edit or delete the entry.
• Blood work: tap a panel in History → edit individual marker values, or delete the entire panel.
• Family history: Profile → Family history → tap a relative to edit conditions.

HealthKit data (sleep, HRV, heart rate, etc.) is owned by Apple Health, not Bivryn. To change those values, edit them inside the Health app. Changes will reflect in Bivryn on the next refresh.

3. Export everything

You can take a full copy of everything Bivryn has stored locally as a JSON archive at any time:

1. Open Bivryn on your iPhone.
2. Tap your profile (bottom-right tab).
3. Tap Privacy.
4. Tap Export everything.
5. The iOS share sheet opens — save to Files, AirDrop to your Mac, or send to yourself via Mail.

The archive contains: profile fields, all logs, all blood-work panels and markers, family history, conditions, reset sessions, experiments, triggers, discoveries cache, and Body Memory chapters. HealthKit raw samples are not included (they live in Apple Health — export them from Health → your profile → Export All Health Data).

4. Delete everything

One tap, full local wipe — no servers to talk to because we don't hold a copy:

1. Open Bivryn.
2. Tap your profile.
3. Tap Privacy.
4. Tap Delete all my data.
5. Confirm the destructive action in the dialog.

All local SwiftData rows are deleted: profile, logs, blood work, family history, conditions, reset sessions, experiments, triggers, discoveries, Body Memory, cached interpretations. Done.

If you had iCloud sync turned on, you may also want to remove Bivryn's residual iCloud storage from iOS Settings → [Your Name] → iCloud → Manage Account Storage → Bivryn.

To delete the app itself, long-press the Bivryn icon on your home screen → Remove App → Delete App. Removing the app removes anything that wasn't already wiped.

5. Control how your data is used

AI interpretations

When Bivryn generates a Body State, Discovery, or answer via Ask Bivryn, it calls Anthropic's Claude API through our backend proxy. We send only the minimum context needed (e.g., "sleep 6h 20m, HRV 38 ms below baseline") with no name, email, or identifier that ties the request to you. Anthropic does not use commercial API content to train their models.

To disable AI generation entirely, cancel your subscription. Previously cached interpretations remain visible; no new ones will be generated.

Analytics

Bivryn uses PostHog to collect non-personal product-usage events (e.g., "user completed a breathing session"). No health data, no PII. Opt out anytime:

1. Open Bivryn.
2. Tap your profile.
3. Tap Privacy.
4. Toggle Analytics off.

HealthKit reads

You can revoke any HealthKit permission at any time from iOS Settings → Privacy & Security → Health → Bivryn. Without sleep/HRV/heart rate access, Bivryn can't build your body state — the app will show an editorial empty state explaining what it needs.

Notifications

iOS Settings → Notifications → Bivryn. You can turn off the morning briefing, post-meal walk reminder, or any other notification individually.

Location

iOS Settings → Privacy & Security → Location Services → Bivryn. Location is optional and only used for travel detection (cell-tower-level, no GPS). Coordinates never leave your device.

6. Sharing data with others

Bivryn never shares your data with anyone unless you explicitly initiate it. Three paths exist for sharing:

• Doctor Snapshot PDF — Profile → Doctor Snapshot → Export PDF. Generates a one-page PDF for your clinician. You choose where it goes.
• Send to AI — Profile → Doctor Snapshot → Send to AI. Sends a markdown dossier to ChatGPT, Claude, Mail, or Messages via the iOS share sheet. There's an "Include identity" toggle if you want to strip name, DOB, and exact body measurements before sending.
• My Circle — Profile → My Circle. Invite up to 5 people to see a calm biology summary — never raw numbers at the default tier. Sharing runs through Apple's CloudKit Shared Database with end-to-end encryption; Bivryn's servers never see the shared payload. You can pause or remove any connection at any time, which stops all future shares to that person immediately.

We do not sell, rent, or otherwise share your data with advertisers, data brokers, or any third party for marketing purposes.

Pausing or removing a My Circle connection

1. Open Bivryn.
2. Tap your profile.
3. Tap My Circle.
4. Tap the person's row.
5. Tap Pause sharing to stop future updates without removing the history, or tap Remove connection in the danger zone to end the relationship entirely.

Existing shared summaries on Apple's iCloud servers age out per Apple's iCloud retention policy after the connection is removed. If you also want to force-purge Bivryn's residual iCloud storage, use iOS Settings → [Your Name] → iCloud → Manage Account Storage → Bivryn.

7. Children

Bivryn is not intended for users under 13. If you are between 13 and 18, please use Bivryn only with the consent of a parent or guardian.

8. Help us help you

If you have a data request we can't fulfill through the in-app controls, or you want a manual review of any data we hold (analytics events, subscription receipts), reach us at @SaySereze on X. We respond within a business day.

9. More information

For the full Privacy Policy, see Privacy. For Terms of Use, see Terms.