Privacy Policy

for the "WGHT LOG" app

Last updated: 1 October 2026

1. Controller

The party responsible for the processing of personal data in connection with this app is:

2. Core principle: all data stays on your device

The app requires no registration and no account. It works fully offline.

3. No ads, no tracking, no analytics

The app contains no advertising, no analytics or tracking tools and no advertising identifiers. There is no "app tracking" in the sense of Apple's App Tracking Transparency, so no such dialog is shown. No usage profiles are created.

4. Apple Health (HealthKit) – optional

At your explicit request, the app can exchange your body weight with Apple Health (HealthKit). Both directions are disabled by default and only become active once you enable them in the settings and grant the respective permission:

• Writing: weight values you record in the app are saved to Apple Health; edits and deletions are reflected there. On request, you can send existing entries once.
• Import (reading): weight values that other apps or scales have stored in Apple Health are added to the app's history and labelled with their source. This copy is stored exclusively on your device.
• Only the data type body weight is read and written. No other health data is processed.
• The data remains within Apple Health on your device or in your personal iCloud (if you use Apple's Health iCloud sync). We receive none of it.
• Health data is not used for advertising, not shared with third parties and not used for any purpose other than displaying your weight history.
• You can revoke writing and import at any time in the app or in the iOS settings under Health > Data Access & Devices. Imported values can be deleted in the app; they remain in Apple Health.

5. Notifications / reminders

If you enable weigh-in reminders, the app schedules local notifications on your device. This requires your permission, which you can revoke at any time in the iOS settings. No data is transmitted to us in this process.

6. Biometric lock (Face ID / Touch ID)

Optionally, you can protect access to the app with Face ID, Touch ID or your device passcode. Authentication is handled entirely by the operating system; the app only receives a "success" or "failure" response and no biometric data.

7. App permissions

The app only requests permissions that are required for the respective feature:

• Apple Health – only when writing or import is enabled; reading and writing are requested separately.
• Notifications – only when reminders are enabled.
• Face ID – only when the biometric lock is enabled.

No location data, contacts or photos are requested or processed.

8. Data security

Your data is stored locally and protected by the security mechanisms of iOS (sandboxing, device encryption). No transfer to external servers takes place.

9. Prices and in-app purchases

The app may contain paid features or subscriptions. Purchases and billing are handled exclusively through Apple's App Store under Apple's terms. We receive no payment or account data. The app only checks with the App Store whether a feature has been unlocked; this check is the app's only outside connection.

10. Deleting your data

Since all data is stored exclusively locally, you have full control at all times. You can delete individual entries, irreversibly remove all data via the settings, or uninstall the app – which deletes the locally stored data.

11. Your rights (GDPR)

As we do not collect or process any personal data from you, we hold no data about which we could provide information or which we could delete. Regardless, under the GDPR you have the rights to access (Art. 15), rectification (Art. 16), erasure (Art. 17) and to lodge a complaint with a supervisory authority. If you have any questions, contact us at info@nordicdatahub.de.

12. Changes to this policy

We update this privacy policy when the app or the legal framework changes. The current version is always available on this page.