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Privacy Policy

Last updated: August 2026

1. Controller

The controller responsible for data processing on this website is:

Guenther Goerg
Adlitzgrabenstr. 5/2/5
2680 Kurort Semmering
Austria

Email:


2. Principles

ChessLounge is a private, non-commercial project. We process personal data only to the extent necessary to operate the application. We do not use analytics, tracking, or advertising services, and we do not set cookies.


3. Data processed

3.1 Registration and login (Firebase Authentication)

If you create an account, we process the following data:

Confirmation, password-reset, and reminder emails (see below) are not sent directly by Firebase, but via our email provider United Domains AG; in the process, your email address is transmitted to this provider.

Purpose: Providing the user account, authentication, and sending necessary account emails.
Legal basis: Art. 6(1)(b) GDPR (performance of a contract).
Retention period: Until the account is deleted upon request. Accounts are additionally deleted automatically: unverified accounts after 7 days without email confirmation, and confirmed accounts after 12 months without a login (you receive a reminder email in advance, after roughly 11 months of inactivity).

3.2 Player data (Firebase Realtime Database)

For the online multiplayer mode, the following data is stored:

The data of a game room (player names, move history, chat messages, among others) is readable by anyone with the room code for as long as the room exists.

Purpose: Providing the online multiplayer mode.
Legal basis: Art. 6(1)(b) GDPR (performance of a contract).
Retention period: Account-related data (username, statistics) until the account is deleted (see 3.1). Room data is automatically deleted after the game ends, or after 7 days at the latest.

3.3 Feedback form

If you send us a message via the feedback form in the app, we process:

Purpose: Handling your feedback and preventing abuse.
Legal basis: Art. 6(1)(f) GDPR (legitimate interest in support and abuse prevention).
Retention period: The message text is forwarded by email to us and is not stored in the database. The timestamp stored for abuse detection (against IP address or UID) is continuously overwritten and is used only for short-term rate limiting.

3.4 Loading the Firebase SDK (Google CDN)

When ChessLounge is loaded, parts of the technical infrastructure (Firebase SDK) are loaded from servers operated by Google Ireland Limited. In the process, your IP address is transmitted to Google. This is technically required to provide the application.

Provider: Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Ireland.
Legal basis: Art. 6(1)(f) GDPR (legitimate interest in operating the application).
Google/Firebase privacy policy: policies.google.com/privacy

3.5 Local browser storage (localStorage)

No transmission to a server

ChessLounge stores the following data exclusively locally in your browser:

This data never leaves your browser and is not transmitted to our servers. You can delete it at any time via your browser settings.

3.6 Donations via PayPal (optional)

If you make a voluntary donation via the donate button, you will be redirected to the website of PayPal (Europe) S.à r.l. et Cie, S.C.A. ChessLounge does not receive any payment or account data in the process. PayPal is responsible for processing this data.

PayPal privacy policy: paypal.com/webapps/mpp/ua/privacy-full


4. No cookies, no tracking

ChessLounge does not set cookies and does not use analytics, tracking, or advertising services (e.g. Google Analytics, Facebook Pixel, or similar).


5. Your rights

You have the following rights regarding your personal data:

Please send requests to:


6. Right to lodge a complaint

You have the right to lodge a complaint with a data protection supervisory authority. The competent authority depends on your place of residence:


7. Data security

Transmission between your browser and our servers is carried out exclusively via an encrypted HTTPS connection. Passwords are hashed by Firebase Authentication and are not readable by us.


8. Changes to this privacy policy

We reserve the right to update this privacy policy as needed, for example when the app's features or legal requirements change. The current version is always available on this page. The date of the last update is shown above.