Privacy Policy

As of: October 2026

1. Data Controller

Sascha Baecker Computerdienstleistungen
Heidweg 24b
21255 Tostedt
Germany
Email: japanesewalkingcoach@gmail.com

2. Principle: Local Data Processing

Japanese Walking Coach was developed with the principle of "Privacy by Design". All health and training data remains exclusively on your iPhone and Apple Watch. No personal data is transmitted to us or to third parties.

3. What Data Does the App Process?

The app processes the following data – exclusively on your device:

• Workout data: Start/end time, duration, training plan
• Health data (via Apple HealthKit): Heart rate (average/maximum), distance, calories burned
• Location data: GPS route of the workout (via HealthKit workout routes)
• Interval data: Phase type (fast/slow), planned and actual duration, steps, distance per interval

4. Apple HealthKit

Japanese Walking Coach uses Apple HealthKit to read and store workout data. Access only occurs after your explicit consent through the iOS HealthKit permission dialogs. You can revoke these permissions at any time in System Settings under Privacy & Security → Health.

HealthKit data is stored locally on the device and encrypted by Apple. Japanese Walking Coach has no access to HealthKit data from other apps.

5. Data Transfer Between Devices

Live training data is transferred between iPhone and Apple Watch via Apple WatchConnectivity. This communication occurs directly and encrypted between your own devices – without routing through external servers.

6. Data Storage

Training history is cached locally on your iPhone in the app's protected storage (iOS data protection) to speed up display. The primary data source remains Apple HealthKit. Japanese Walking Coach operates no servers of its own and does not store any data with third parties.

Whether your health data is synced between your Apple devices via iCloud is up to you in your iPhone settings. This sync is performed by Apple and is subject to Apple's privacy policy; the app has no influence on it.

7. No Sharing with Third Parties

Japanese Walking Coach does not share any personal data with third parties. No analytics, tracking, or advertising services are used.

Optional in-app purchase (Premium): The one-time purchase is handled entirely through Apple's App Store. The app receives no payment or account details – only Apple's confirmation of whether Premium is unlocked. Apple's privacy policy applies to the processing of the purchase.

8. No Cookies & No Tracking

The app does not use cookies, analytics tools, or user tracking. This website also does not use tracking cookies.

9. Hosting of This Website

This website is hosted on Firebase Hosting, a service of Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Ireland. When accessing the website, technical access data is automatically recorded in server log files (e.g., IP address, browser type, time of access). This data cannot be attributed to specific individuals and is not merged with other data sources. Collection is based on Art. 6 para. 1 lit. f GDPR (legitimate interest in trouble-free operation).

10. Your Rights

You have the right at any time to:

• Information about your stored data
• Correction of inaccurate data
• Deletion of your data
• Restriction of processing
• Data portability
• Object to processing
• Lodge a complaint with a supervisory authority

Since all data is processed locally on your device, you have full control: You can delete the app at any time to remove all locally stored data. Workout data in Apple Health can be managed directly in the Health app.

11. Changes

This privacy policy may be updated as needed. The current version is always available on this page.

12. Contact

For questions about data privacy, reach us at:
japanesewalkingcoach@gmail.com