NextDNS is my new favourite DNS service
I've had the complete opposite experience to the author w.r.t. PiHole and WireGuard.I run a PiHole on my home network and it's also my WireGuard "server". I will concede am lucky enough to have static IPv4/IPv6 addresses on my home connection.On my iOS devices I have two connections set up: one for "access to home + DNS", and the other for all traffic.
When I'm on my home wifi the VPN connection is off, when I'm on cellular data the DNS is set to the PiHole, and when I'm on any other wifi I route all traffic via the VPN (all automatically via the WireGuard app).For my other mobile devices... well, they're Linux, so I just set the DNS server correctly and leave WireGuard always connected. It's a UDP "connection" for crying out loud.This all works flawlessly now to the point that my less technically-minded roommate has it set up on their phone, too: they can access the NAS all the time and ads are blocked in the web browser and in apps.