Privacy Policy
App: BikePowerCalc · Effective date: September 11, 2025
1. Controller
The data controller is Marian Müller, email: support@marianmueller.com, website: www.marianmueller.com.
2. What we collect
The App is designed to work without creating an account and stores most inputs on your device only. We do not sell your data.
DataWherePurposeRetentionLegal basis (GDPR)
App inputs & preferences (e.g., units)On deviceProvide core functionalityUntil you delete the app or reset dataArt. 6(1)(b) contract
Crash/diagnostic dataApple (App Store / OS)Stability & bug fixingPer Apple policiesArt. 6(1)(f) legitimate interests
Support emails you sendEmailRespond to youAs needed for supportArt. 6(1)(b) or (f)
Website logs (when visiting links)Web hostSecurity & performanceShort, per host policiesArt. 6(1)(f)
3. Cookies & tracking
The App does not use third‑party trackers. Any diagnostics are provided by Apple’s platform services.
4. Recipients / processors
Apple Inc. (App Store, crash/diagnostics)
Your email provider (if you email support)
Web hosting provider for marianmueller.com
5. International transfers
Data may be processed outside your country due to Apple or hosting infrastructure. We rely on appropriate safeguards where required.
6. Your rights (EU/EEA, GDPR)
You may have rights to access, rectify, erase, restrict or object to processing, and data portability. You can also lodge a complaint with a supervisory authority. To exercise rights, contact support@marianmueller.com.
7. Security
We use reasonable technical and organizational measures. No method is 100% secure.
8. Children
The App is not directed to children under 13, and we do not knowingly collect their personal data.
9. Changes
We may update this policy. We will indicate the effective date above and, if appropriate, notify you in the App.
10. Contact
Questions? Email support@marianmueller.com.