This is a secure dns and adblocker that has evolved into a great privacy app. Yesterday i noticed it has added support for Wireguard and TOR as well as proxy. The app comes with a customizable firewall. It means you can have secure dns combined with vpn/proxy and firewall in one app.
P.S: I’m not the developer.
Because if at some point one of its features you use are going from from free to paid, & then you have no money for this (as too poor for it, or the will/ethic to pay, etc) while there are no free forks/alternatives for the service : you have a problem. Not everybody is as good users as us using iptables or wireguard, finding different alternative may be hard to understand for others. For example, as I’m not a good developper : I personnally feel dependant to a lot of foss apps & choices they make. If the matter here is related to privacy, I think it’s important to know that you may pay at some point for it.