Privacy policy for the app “Mucken”

This is a translation for your convenience. The German version is legally binding.

Last updated: 1 November 2026

1. Controller

hyperdigital UG (haftungsbeschränkt)
Zur Eibe 1, 95131 Schwarzenbach am Wald
Represented by: Christian Koch
E-mail: kontakt@hyperdigital.de
Phone: +49 151 21219011

2. The essentials in brief

You can play Mucken against the computer without an account, without registering and without an internet connection. No personal data leaves your device when you do. When online, the app loads the list of sponsored card decks and sends anonymous usage figures (see the section Anonymous usage figures). We only receive further data if you request a sponsored deck via the form „Eigenes Kartendeck“ (“Custom card deck”), share your statistics online, take part in the rule sets from your area, allow notifications, report a bug or add a tournament.

3. Data stored only on your device

The app stores locally on your device:

• your house rules (e.g. game ranking, Bobbl limit) and the names of the other players,
• the card design you have chosen,
• the current game including the game log (cards, announcements, tricks), so that you can continue it later.

This data is not transferred to us or to third parties. It is deleted when you delete the app.

4. Sponsored card decks and „Eigenes Kartendeck“

Companies, clubs and inns can sponsor their own card decks with their logo. So that their logo appears at the table, the app retrieves the public list of decks including logos from our server games.hyperdigital.de (data centre in Germany) at startup. For technical reasons, your IP address is transmitted in the process; the server stores it in its access logs. We use these logs only to ensure the operation and security of the server (Art. 6 (1) (f) GDPR). The app selects on your device which deck matches your area; nothing is sent in the process.

Via the form „Eigenes Kartendeck“, companies, clubs and inns can request a sponsored card deck. In doing so, we process the information you provide there:

• company or club, contact person, e-mail address, optionally phone number,
• the desired area (e.g. your district, determined from the postcode you enter there), optionally the desired term and your message,
• the logo you have selected (and optionally a second logo for the game table) as well as the position, size and background of the logo.

Procedure: The request is free of charge and non-binding. We review the deck and approve it or reject it with a reason. After approval, we send you the offer and a payment link by e-mail. Nothing is paid in the app. A rejected deck incurs no costs.

Publication: Once payment has been received, the card deck is shown to the players of the app in the agreed area as a sponsored card design for the agreed term („Gesponsert von …“, “Sponsored by …”). The logo and the name of your company or club are then visible to them. The form expressly points this out; your confirmation is a prerequisite for the request.

Storage location: The request including the logo is stored on our server games.hyperdigital.de (data centre in Germany). Only hyperdigital has access; your device receives a secret password with which it can query the status of your request. A published deck (logo, name, logo design, area, term) can be retrieved by all users of the app.

Payment: Payment takes place outside the app via the payment link in our offer (payment service provider Stripe). Stripe's terms and privacy policy apply.

Purpose: We use the information to review your request, make you an offer, coordinate the deck with you, publish it and process the booking.

Legal basis: Art. 6 (1) (b) GDPR (contract or pre-contractual measures at your request) and Art. 6 (1) (a) GDPR (your consent in the form). You can withdraw your consent at any time with effect for the future, e.g. by e-mail to kontakt@hyperdigital.de.

Storage period: We delete rejected or unbooked requests after 12 months at the latest. After the booked term ends, we remove the deck from the app; we keep booking records in accordance with the statutory retention periods (up to 10 years).

5. Sharing statistics online (voluntary)

Under „Statistik“ (“Statistics”) you can share your statistics via a link. Only if you expressly switch this on and consent do we transfer to our server (games.hyperdigital.de, hosted in Germany):

Nickname and statistics can be retrieved by anyone who knows the link (as a web page and in the app). As long as sharing is switched on, the app updates the statistics after every game. With „Teilen beenden“ (“Stop sharing”), we delete all of this data from the server immediately and completely; the link no longer works afterwards. We may block offensive nicknames.

Legal basis: your consent (Art. 6 (1) (a) GDPR), which you can withdraw at any time with „Teilen beenden“ or by e-mail to kontakt@hyperdigital.de.

6. Rule sets from your area (voluntary)

Under „Mitspieler & Hausregeln“ → „Regelwerk aus deiner Gegend“ (“Rule set from your area”) you can search for and adopt other players' rule sets. For the search, the app only sends your search term (postcode or town) to our server games.hyperdigital.de (hosted in Germany).

Only if you take part yourself do we store there:

• Sharing your own rule set: the name (e.g. inn or regulars' table), postcode, town and optionally district of the town, your nickname and your house rules. You expressly confirm this before submitting.
• Rating: your star rating (1–5) of a rule set.
• Commenting: your comment and your nickname.
• Reporting: the reason you give.
• Adopting and following: We count adoptions anonymously (at most once per day and device) in order to show popular rule sets higher up. We also note the anonymous identifier as “follows” so that we can show you changes made by the creator and, if you wish, notify you of them. With „Nicht mehr folgen“ (“Unfollow”) or by adopting other rules, we remove this entry.
• Change suggestions: If you suggest different rules for a rule set, we store the rules, your comment and your nickname. Only the creator of the rule set can see this; you receive their reply.
• Editing: If you change your own rule set, new rules apply immediately; we review changes to the name and location beforehand.

So that only you can change or delete your rule sets and everyone rates only once, the app uses the same random, anonymous identifier as for sharing statistics (section 5). Others see only your nickname instead of the identifier.

Review and visibility: We review new rule sets before they become visible to others. Comments are initially seen only by the creator of the rule set (together with your nickname); they decide whether the comments become public and can hide them again later. Visible to all users of the app are the name, location, nickname, rules, approved comments and the average rating. We reject or block offensive content. You can report content and block other players; blocked players are remembered only by your device.

Deletion: You can delete your own rule sets at any time under „Meine Regelwerke“ (“My rule sets”); this also deletes the ratings and comments on them. For everything else, write to us at kontakt@hyperdigital.de.

Legal basis: your consent (Art. 6 (1) (a) GDPR), which you can withdraw at any time.

7. Notifications (push)

If you have shared a rule set, requested a card deck or shared your statistics, the app asks once whether it may send you notifications. Only if you agree does the app send a device token to our server games.hyperdigital.de. We store it together with the anonymous identifier or your deck request and use it exclusively for notifications that concern you: your rule set or card deck has been reviewed or is live, someone has commented on your rule set, new ratings (at most one notification per day), a card deck is about to expire. We do not send advertising.

You can turn off notifications at any time in the app under „Mitspieler & Hausregeln“ → „Benachrichtigungen“ (“Notifications”) (we then delete the token on the server) or in the system settings. We delete invalid tokens automatically.

Legal basis: your consent (Art. 6 (1) (a) GDPR).

8. Access to photos

9. Anonymous usage figures

So that we know how much Mucken is played and can show our sponsors how often their card deck was on the table, the app occasionally sends pure counters to our server games.hyperdigital.de: the date, the type of counter (new installation, played on this day, games, Bobbl, Hänger, fouls), the card deck used, the game type including announcement and result (e.g. “Wenz, Schneider announced, won”), the area in which the game was played, and the count. The area is the district belonging to the postcode you entered under „Deine Gegend“ (“Your area”) (not the postcode itself and never your location); without a postcode, only the country of your device. No identifier, no name and no game content is transferred; we cannot attribute the figures to any device or person. We only store the totals per day and card deck.

Legal basis: our legitimate interest in usage statistics and in billing sponsors (Art. 6 (1) (f) GDPR). For technical reasons, the server sees your IP address in the process; it is not stored with the counters.

10. Reporting a bug (voluntary)

You can report a bug to us via the bug icon at the top right of the game. Only when you tap „Senden“ (“Send”) does the app send to our server games.hyperdigital.de: your description, your contact details (only if you enter any), the game log of the current Hänger including the game currently in progress (cards of all players, announcements, tricks and the names of the other players; you do not see the other players' cards before sending), on request a screenshot of the game table, as well as technical information: device model, operating system, app version, screen size, orientation, language, time zone, appearance (light/dark), text size, whether accessibility features or low power mode are on, card deck, house rules, adopted rule set and the settings of the game. You can see exactly which information is included before sending under „Was wird mitgesendet?“ (“What gets sent?”).

We use the report only to find and fix the bug and delete it no later than twelve months after it has been dealt with. If you want us to delete your report sooner, write to us.

Legal basis: your consent by sending (Art. 6 (1) (a) GDPR); we use your contact details only for follow-up questions about this report.

11. Tournaments (voluntary)

Under „Eure Turniere“ (“Tournaments”), players, regulars' tables, clubs, inns and municipalities add their local tournaments. We do not organise these tournaments: the respective organiser is solely responsible for the details, dates, procedure, entry fee and prizes; we accept no responsibility for them.

Adding a tournament: Only when you tap „Einreichen“ (“Submit”) does the app send to our server games.hyperdigital.de: name, date and time, venue, address, entry fee, prizes, registration, contact, description, the rule set that will be played, your nickname and the anonymous identifier from section 5 (so that only you can change or cancel the tournament). After our brief review, all information except the identifier is visible to all players – including the contact. So only enter contact details that may be published.

Saving: If you save a tournament, we store your anonymous identifier with the tournament in order to send you a reminder the day before and a notification in the event of a change or cancellation (section 7).

Adding to calendar: The app opens your device's calendar with pre-filled details; it is only saved there if you confirm. We receive nothing from this; the app does not need access to your calendar.

We delete tournaments 90 days after the date. Legal basis: your consent by submitting or saving (Art. 6 (1) (a) GDPR).

12. No analytics, no tracking

Apart from the anonymous counters above, the app uses no analytics tools, no advertising identifiers and no tracking.

13. 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) as well as the right to withdraw consent at any time (Art. 7 (3)). To do so, write to us at kontakt@hyperdigital.de.

You can also lodge a complaint with a data protection supervisory authority, e.g. the Bayerisches Landesamt für Datenschutzaufsicht (Bavarian Data Protection Authority), Promenade 18, 91522 Ansbach.

14. Changes

If the app changes, e.g. through advertising or online games, we will adapt this policy. You can always find the current version in the app.

Imprint

hyperdigital UG (haftungsbeschränkt)
Zur Eibe 1, 95131 Schwarzenbach am Wald
Represented by the shareholders: Christian Koch
E-mail: kontakt@hyperdigital.de · Phone: +49 151 21219011
Register court: Amtsgericht Hof, commercial register 6353
VAT ID: DE299376080

Postcodes and districts: GeoNames (www.geonames.org), licence CC BY 4.0.