At least Google VPN is honest about who tracks you with this VPN, LOL
I was also curious, so I found this page. It looks nothing like the screenshot (maybe because Im on mobile), and the only sentence coming close, under the “Extra online protection” heading, is: “Reduce online tracking by hiding your IP address”. As if that means anything if you have Google apps installed on your phone.
But after reading more, I found a link to their how-it-works page, which then linked to their github page. Is beeing open-source really enough to show it’s secure and private? I still wouldn’t trust them.
Being open source by default doesn’t make a project secure and privacy friendly (especially if it’s server sided code. You can’t really verify for sure)