The STAERK project, and its creator, will always advocate for your privacy. This specific web-site does not accept user profiles, and hence your personal data is at no risk on your visit here.
Nor does this site use any 3rd party service that track or fingerprint you. As a rarity, you have truely found a website that just does not care to monetize from either you or your personal data.
That being said, this site does log your actions along with your IP address. This is done primarly to improve the experience for you, the end-user, but be rest assured that actions will also be taken towards harmful clients.