Legal

Privacy Policy

Effective September 8, 2026

Correlate analyses your health on your device. We never upload, store, or sell your data.

1. Core principle: your data stays on your device

Correlate performs all health analysis on your iPhone. We do not upload your health data, we do not store it on servers, and we have no way to read it. This is the product's central privacy commitment, not a setting you have to find.

2. What data the app reads

Health data (processed locally only)

With your authorisation, Correlate reads from:

  • Apple HealthKit — heart rate, HRV, sleep, activity, calories, workouts
  • Garmin Connect (optional) — heart rate, HRV, sleep, training load, stress, Body Battery
  • Your manual logs — daily yes/no answers such as “Did I train today?”

How it is processed:

  • You authorise Correlate to access a source.
  • The app downloads recent data onto your iPhone.
  • Every correlation and score is computed on the device.
  • Nothing is sent to our servers, to cloud storage, or to a third party.
  • Delete the app and no copy of your data remains anywhere.

Anonymous usage statistics

To find crashes and understand which screens matter, the app can send aggregated, non-personal statistics through TelemetryDeck: crash traces, device model, iOS version, and which tabs were opened.

It never includes your name, email, health values, logged habits, or location. You can turn it off in Settings › Data Sources › Privacy.

3. How long data is kept

  • Health data — on your device only, for as long as you keep the app.
  • Logs and analysis — in the app's local database; removed when you uninstall.
  • Anonymous statistics — retained up to 12 months, then deleted.

4. What we never do

We do not sell, rent, or disclose your personal or health information to marketers, advertisers, or data brokers. We do not build a profile of you, and we do not have an account system that could hold one.

The app does rely on a small number of third parties, each subject to its own terms:

  • Apple HealthKit — data stays on your device; you control access in the Health app.
  • Garmin Connect — read-only access you grant, and can revoke at any time in Garmin's settings.
  • TelemetryDeck — aggregated, anonymous crash and usage statistics only.
  • RevenueCat — processes the one-time App Store purchase; it receives no health data.

5. Your controls

Access and deletion

  • Your data already lives on your device — export it from Apple Health at any time.
  • Uninstalling the app deletes its local database and every derived analysis.
  • Revoke a source in the Health app or in Garmin Connect and Correlate loses access immediately.

Turning off statistics

Settings › Data Sources › Privacy › Share anonymous usage statistics → off. This also stops the SDK's own signals.

6. Security

Keeping the analysis on your device removes most of the attack surface outright. For what remains: anonymous statistics are sent over encrypted HTTPS; your HealthKit and Garmin authorisations are held by Apple and Garmin, so we never see your credentials; and the app stores no passwords or API tokens on disk.

7. Children

Correlate is not directed at children under 13, and we do not knowingly collect their data. If you believe we have, contact us and we will act on it.

8. California and EU rights

CCPA — you have the right to know what personal information is collected and to have it deleted. Correlate collects none beyond anonymous statistics; uninstalling removes everything else.

GDPR — local processing means the app is built to comply by default. You can export your data from Apple Health at any time. If you connect Garmin, Garmin's own privacy terms also apply to the data held in your Garmin account.

9. International transfers

Your health data does not leave your device, so it is never transferred. Anonymous statistics are sent to TelemetryDeck, which hosts EU users' data in EU data centres.

10. Changes to this policy

We may update this policy. Changes take effect when posted here or in the app, and continued use constitutes acceptance.

11. Contact

藍帽科技有限公司 (Blue Hat Studio)
Taiwan company ID: 96208400
earlysleepers@gmail.com

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