Privacy policy for “Cardogo”

Last updated: October 11, 2026

Contents

1. Controller

Patrick Gruben
Rolandstraße 14
40476 Düsseldorf
Germany
E-mail: info@grubenhund.com
Phone: +49 160 94857908

Under the brand “grubenhund games” I develop and publish games for smartphones and tablets. I am not required to appoint a data protection officer; if you have questions, write to me directly.

2. Scope

This policy covers the game “Cardogo”. The version for all games is at games.grubenhund.com/en/privacy.

What happens when you visit this website (games.grubenhund.com) is described in the section “Visiting this website”. The dog training website grubenhund.com has its own privacy policy (in German).

3. In short

• You don't need to register – no name, no password.
• Your progress is stored on your device.
• We use no analytics or tracking tools of our own.
• Purchases are handled by Apple and Google; we never see payment details.

4. Progress on your device

The game stores progress, settings, unlocked and purchased content locally on your device. This data does not reach us unless one of the backups described below is active. Legal basis: Art. 6(1)(b) GDPR (providing the game) and § 25(2) no. 2 TDDDG (storage on the device that is strictly necessary).

Note on device backups: if iCloud Backup on your iPhone or Android backup in your Google account is switched on, it may also back up the game data and restore it after a reinstall. Apple's or Google's privacy terms apply; we do not receive this data.

5. Copy in your iCloud (iPhone and iPad)

On iPhone and iPad the game keeps a copy of your progress in the iCloud storage of your Apple ID so it is available on your other Apple devices. This copy is held only by Apple in your account; we have no access to it. Apple's privacy terms apply. You can turn off iCloud for the game in the iOS settings; how to delete the copy in the game is explained under “Delete data”.

6. In-app purchases

Purchases are handled entirely by the Apple App Store or Google Play, who are separate controllers for this. We never receive payment details. The game only receives a purchase confirmation and records in your save which content you bought, so it stays unlocked. Legal basis: Art. 6(1)(b) GDPR.

7. Children and teens

Our games are not specifically directed at children under 13. Minors need parental consent for purchases. We recommend protecting purchases in the device settings (Screen Time or Google Family Link).

8. Visiting this website

This website (games.grubenhund.com) sets no cookies, uses no analytics or tracking tools and embeds no third-party content; fonts, images and videos come from the same server. Links to the App Store, Google Play or other websites only transfer data to those providers once you click them.

When you open a page, the host processes technically necessary data in server logs: IP address, date and time, requested address, amount of data transferred, browser and operating system. This is required to deliver the website, detect attacks and fix errors (Art. 6(1)(f) GDPR; legitimate interest in secure and reliable operation). The site is hosted by Vercel Inc., 650 California St, San Francisco, CA 94108, USA, as processor; transfers to the USA are covered by the EU Standard Contractual Clauses and Vercel's certification under the EU-US Data Privacy Framework. Logs are kept only as long as needed for operation, security and troubleshooting, usually no longer than 30 days.

If you send me an e-mail, I process your details in order to reply (Art. 6(1)(b) or (f) GDPR).

9. Recipients and service providers

• Apple and Google – app stores, payment processing, accounts and device backup (separate controllers)
• Vercel Inc. (USA) – hosting of this website games.grubenhund.com (processor, see “Visiting this website”)

Beyond that we do not share personal data, and we never sell data.

10. Transfers outside the EU

Some service providers are based in the USA. Where data is transferred there, this is based on the EU-US Data Privacy Framework (adequacy decision of the European Commission) or EU Standard Contractual Clauses (Art. 46(2)(c) GDPR).

11. Your rights

You have the right of access (Art. 15 GDPR), rectification (Art. 16), erasure (Art. 17), restriction of processing (Art. 18), data portability (Art. 20) and objection (Art. 21), and you may withdraw consent at any time with effect for the future (Art. 7(3)). Write to info@grubenhund.com.

Right to object

Where we process data on the basis of legitimate interests (Art. 6(1)(f) GDPR), you may object to this processing at any time on grounds relating to your particular situation (Art. 21 GDPR). Write to info@grubenhund.com.

How to delete data yourself is explained under Delete data.

You may also lodge a complaint with a supervisory authority, for example the data protection authority of North Rhine-Westphalia (LDI NRW), Kavalleriestraße 2–4, 40213 Düsseldorf, Germany.

12. Changes

When a game changes – for example with new features or service providers – I update this policy. The version published here applies. If this English version differs from the German one, the German version prevails.