Privacy policy

Last updated: 8 November 2026 · This policy covers the entire website, including the project pages LOGisch, BienenWaagenManager, RudelPlan, RudelKey, RudelSafe, RudelOrga, RudelCash, RudelLink, RudelRally, Parzello and TonStrom. The apps have their own policies (section 6). The German version is legally binding.

1. Controller

Christian Kempf
Breitenweg 2, 72406 Bisingen, Germany
E-mail: christian.firmdev@gmail.com

No data protection officer has been appointed, as none is required.

2. In brief

No cookies, no tracking, no analytics, no advertising.
No embedded third-party content: no external fonts, maps, videos or social media plugins. Fonts are served from this server as well.
I only process personal data if you contact me.

3. Hosting and server logs

The website is hosted by goneo Internet GmbH, address per goneo legal notice / DPA, on servers in Germany. A data processing agreement under Art. 28 GDPR is in place with goneo.

Each visit makes the server store technically necessary data: IP address, date and time, requested page, amount of data transferred, referrer, browser and operating system. This serves secure and reliable operation and defence against attacks. The legal basis is Art. 6(1)(f) GDPR (legitimate interest). Logs are deleted or anonymised after X days (per goneo).

4. Contact by e-mail

If you write to me, I process your details (e-mail address, name, content of the message) to answer your enquiry. The legal basis is Art. 6(1)(b) GDPR where an app, a contract or pre-contractual steps are concerned, otherwise Art. 6(1)(f) GDPR. My mailbox is hosted by Gmail, a service of Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Ireland, where your message is stored; a transfer to Google LLC in the USA cannot be ruled out. Google is certified under the EU-US Data Privacy Framework, for which the European Commission has issued an adequacy decision. I delete the data once the matter is settled, unless statutory retention obligations apply (e.g. business letters 6 years, invoices 8 years).

5. Links to other providers

Links, e.g. to Google Play, are simple references. Only when you click them are you taken to the respective provider, whose privacy policy then applies.

6. The apps

The apps have their own privacy policies, which are also listed in the Google Play Store.

7. Your rights

You have the right of access (Art. 15), rectification (Art. 16), erasure (Art. 17), restriction of processing (Art. 18), data portability (Art. 20) and to object to processing based on legitimate interests (Art. 21 GDPR). An e-mail to the address above is enough.

You may also lodge a complaint with a data protection supervisory authority, e.g. the one responsible for me: Der Landesbeauftragte für den Datenschutz und die Informationsfreiheit Baden-Württemberg (State Commissioner for Data Protection and Freedom of Information Baden-Württemberg), Lautenschlagerstraße 20, 70173 Stuttgart, Germany.

8. No automated decision-making

No automated decision-making or profiling takes place.