From the guardianapp.com blog:
The initial 1.0 release of Guardian Firewall primarily does one thing, and it does it well: Block those trying to track you, and tell you who they are as well as what types of data they likely tried to collect.
Very intriguing, at $9.99/month (or $99.99 per year) for VPN + Firewall capabilities, it’s competitive but of course not free. I’m very curious to see how speed compare to not having a VPN, and to the upcoming Couldflare Warp — which will have similar benefits, but far from the same control. You could also argue that Guardian is a much more trustworthy provider than Cloudflare.