Privacy Policy

This privacy policy applies to road-bike-training.com and the additional domains listed in our legal notice. The associated app wattrun.app has its own, complementary privacy policy that applies in addition once you create an account there.

1. Controller

Matthias Henkert
Birkenstrasse 52c
16321 Bernau b. Berlin, Germany
Email: mail@stackbrain.de

2. What data is processed

• Server logs (technically necessary): IP address, browser type, OS, referrer URL, requested resource, timestamp. Legal basis: Art. 6 (1) (f) GDPR (legitimate interest in service delivery and operational security). Retention: max. 7 days, then deleted or anonymized.
• Analytics (consent only): We use Umami, a self-hosted, privacy-friendly analytics tool on umami.wattrun.app. It processes page views, time on page, device/language information and a daily-rotated hash of IP+User-Agent. No cookies are set; the loader stores only your consent decision in localStorage. Legal basis: Art. 6 (1) (a) GDPR in conjunction with § 25 (1) TTDSG (consent). You can withdraw your consent at any time by deleting the wattrun-consent-v1 entry under this domain in your browser (DevTools → Application → Local Storage).

3. Recipients / processors

• Hostinger UAB (Vilnius, Lithuania, EU): VPS hosting for this website. Legal basis: Art. 6 (1) (f) GDPR; data processing agreement under Art. 28 GDPR is in place (DPA).
• Self-hosted analytics (Umami): Runs on a server likewise operated by the controller (umami.wattrun.app, also hosted at Hostinger). No third-country transfer.

4. Third-country transfers

No third-country transfer takes place from this website. If you click links to the app wattrun.app, its own privacy notice applies; the app uses Anthropic (US, SCC), Clerk (US, SCC) and Strava (US, EU-US Data Privacy Framework).

5. Cookies and similar technologies

This website does not set tracking cookies. Only your consent decision (wattrun-consent-v1) is stored in localStorage. This is permitted without consent under § 25 (2) (2) TTDSG (strictly necessary to honour your decision).

6. Your rights (Art. 15–21 GDPR)

• Access to stored data (Art. 15)
• Rectification of inaccurate data (Art. 16)
• Erasure (Art. 17)
• Restriction of processing (Art. 18)
• Data portability (Art. 20)
• Objection (Art. 21)
• Withdrawal of consent at any time without giving reasons

Please direct requests to mail@stackbrain.de.

7. Right to lodge a complaint

You have the right to lodge a complaint with a data protection supervisory authority. The competent authority for the controller is the State Commissioner for Data Protection and Freedom of Information of Brandenburg, Germany.

Last updated: May 2026