Initial reaction: Not a fan of this UX, which seems to be more intent on me installing their app, and hiding information, rather than providing the configuration details up front, or making it easy to get to. The server/settings links only appear when hovering over the row in the table. I'd rather the information or links to it are presented up front.
I'm a bit frustrated that they haven't included any indication of pricing for adguard DNS.
Why is AdGuard DNS free?
You can use public AdGuard DNS servers for free, there's no catch. However, we incorporate AdGuard DNS in many of AdGuard and AdGuard VPN paid apps. We are also going to offer paid personal AdGuard DNS servers with advanced functionality and more customization options.