WireGuard

It's okay, but there are some major "user experience" category annoyances. Like most of you, I'm using this to connect to a Wireguard instance running at home to access my home network resources on the go. The problem with this app is that it will enable the VPN tunnel on your phone, even if it doesn't make contact with the remote server. This essentially black-holes all your phone's traffic, cutting it off from all network access. The VPN should NOT be enabled if it can't connect to the servr

Lean and free of nonsense. My only one issue is that the built-in QR scanner does not recognize inverted codes (white squares on black background, ie the QR generated by the UniFi console with the dark theme on). I tested this on 2 different Android devices and even tried scanning a screenshot of the QR at max 1-bit contrast and I could not get it to scan. It works if the dark QR is inverted or if the UniFi dark theme is disabled. Not a dealbreaker for me.

absolutely best for the VPN for the self host. It's easier to setup and connect even for newbie. I hope that Android can have an option to choose for exception when connected to a WiFi I set for exception to make disconnected from the VPN, I saw it in iOS version but it can't be seen in Android. another one is make scanning QR code to add tunnel more easier, because I used iPhone to scanned it and it easy to scan but I scanned by two Android it difficult to scanned.