Privacy

CALCTHRUM has no ads, analytics or tracking services. The web app and these CALCTHRUM pages use no tracking cookies.

Local game records

Language, sound, operation, level and statistics are stored in your browser. They are not sent to us. The browser caches the required game files for offline play.

Speech

Correct equations are assembled from Fish Audio recordings made in advance. Audio files load with the game from our web server and are cached for offline play. The game makes no connection to Fish Audio and sends no equations to a speech service while you play. Speech can be switched off.

Loading the website

The web server processes necessary access data such as IP address, time and requested file. These CALCTHRUM pages embed no Matomo, advertising or analytics services.

Linked pages

External links follow the privacy information of their own websites. Other Appsthrum pages have their own privacy terms.

Contact

Legal notice and responsible publisher · marioengel@me.com

Optional explainer video

The preview image is hosted on our server. Only when you choose “Watch the explainer” do we load the YouTube player in privacy-enhanced mode from youtube-nocookie.com. YouTube then receives technical connection data such as your IP address. Playback follows Google’s privacy information. You can use the game independently of the video.