It's simple: I don't collect any personally identifiable data. No cookies are used either.

You can use the website without any data being saved at all.

When filling out the quiz, you can optionally agree to save your answers for statistical purposes. In that case, the server will use your IP address to determine your country, but it won't be store the IP itself. It will also persist a very basic hashed fingerprint of a few browser headers in order to mitigate the same person submitting multiple responses. It's impossible to identify you based on that hash.