Privacy policy

Last updated: 2026-10-07

This policy explains what information the Joker card game ("Joker", "the app") handles, why, and what you can do about it. We only collect what the game needs to work, and we never sell your data or use it for advertising.

1. Who is responsible

Joker is developed and run by Simon Isacson, Sweden, who is the data controller for the information described here.

Questions, requests and complaints: buttlerite@gmail.com

2. What we collect

• Guests: the name you type in. It is used while you are connected and is not saved in our database. If a guest sends or receives a report, the guest name is saved with that report.
• Accounts (Google, Facebook or Apple): an identifier from the service you log in with and a display name (your first name, or the name you give Apple). We never receive your password, contacts or posts. Apple may share your email address; we only use it to suggest a display name and do not store it.
• Game data for accounts: your ratings and number of ranked games, a summary of finished matches (players, scores, placement), the look of your character, items you own and how you got them, your friend code, friends, friend requests and the players you have blocked.
• Chat: messages are delivered to the players in the same room and kept in the server’s memory for that room only (the latest 50) until the room closes. They are not saved in our database, except when a player is reported: then the recent messages between the two players are saved with the report.
• Reports and moderation: who reported whom, the room, the reason, any note, the chat excerpt above, and any suspension of an account.
• Push notifications (only if you allow them): a push token for your device and your app language, so we can send game invites and friend requests.
• Login session: a random token stored on your device and on our server so you stay logged in. It expires after 90 days or when you log out.
• Technical information: your device connects to our server over the internet, which means your IP address is processed while you are connected. We do not store it in the game database. Short-lived server logs may contain technical error information.

On your own device the app also stores your name, language, login token, character, sound setting, whether you have finished the tutorial and the game you are in, so the app works when you open it again.

We do not use advertising, analytics or tracking tools.

3. Why we use it (legal basis)

• To provide the game you asked for (contract): accounts, matchmaking, playing, ratings and leaderboards, match history, friends, invites, chat and items you own.
• To keep the game safe and fair (legitimate interest): the chat filter, reports, blocking, suspensions, login limits and backups.
• Push notifications (consent): you can turn them off at any time in your phone’s settings.

4. Who can see or receive it

• Other players see your display name, character, cards played, chat messages and reactions in games you play. Your name and rating appear on the leaderboard if you play ranked games. Friends see when you are online.
• Hetzner Online GmbH hosts our servers in Helsinki, Finland (EU).
• Google, Facebook (Meta) and Apple handle the login you choose under their own privacy policies.
• Push notifications are delivered through Expo (650 Industries, Inc., USA) and Apple’s or Google’s push services, which can involve processing of the push token outside the EU/EEA.

We do not share or sell your information to anyone else, unless we are required to by law.

5. How long we keep it

• Account data is kept until you delete your account.
• When you delete your account (Menu → Delete my account), it is removed from our database straight away. It disappears from our daily backups within 14 days and from our hosting provider’s backups within 7 days. In other players’ match history your name is replaced with “Deleted player”.
• Login sessions expire after 90 days.
• Reports are kept for at most 12 months.
• Chat messages are only kept in memory while the room exists, except for excerpts saved with a report.

6. Your rights

You have the right to access the information we hold about you, to have it corrected or deleted, to restrict or object to its use, and to receive it in a portable format. You can delete your account yourself in the app; for the other rights, email buttlerite@gmail.com.

If you are unhappy with how we handle your information, you can complain to the Swedish Authority for Privacy Protection (Integritetsskyddsmyndigheten, imy.se).

7. Children

Joker is not directed at children under 13, and they should not create an account. Online games include chat with other players, which can be muted, blocked and reported. If you believe a child under 13 has created an account, contact us and we will delete it.

8. Security

Connections between the app and our server are encrypted, access to the server is limited to the developer, and the database is backed up daily.

9. Changes

If we change this policy, we update the date at the top. Important changes are announced in the app.