WireGuard

Works super fast and it's a very small package. If you are unable to import configuration by file, (unifi users probably) you need to shorten the name of the file. (try home.conf or something) There's a silly artificial cap on the filename length. This applies to all platforms, not just mobile. You can rename the file whatever you want, just keep it short and it will import with no issues. wireguard devs if you're reading this, no one cares why there's a limit on the filename length, stop<3

Works really well when it works, but a couple big issues: connects on its own very often, even though "always on vpn" is disabled in Android settings. It would be nice if there were a confirmation dialog before connecting (it would be even better for this to just be fixed, but even then a confirmation option would be nice). Also when my endpoint was down, it would claim to be connected even when it wasn't. There should be some kind of failure notification when it doesn't connect.

Wire guard changed the VPN world for the best. It's a very good and reliable protocol and I've never had issues with the official client on Android. The kill switch works and it's not leaking anything (including DNS). It constantly tries to reconnect automatically and it keeps trying until the tunnel is re-established which is incredibly useful while I'm driving and going through tunnels. Hopefully one day wire guard will be integrated directly in Android, but until then this app will suffice.