This is an Android GUI for [WireGuard](https://www.wireguard.com/). It [opportunistically uses the kernel implementation](https://git.zx2c4.com/android_kernel_wireguard/about/), and falls back to using the non-root [userspace implementation](https://git.zx2c4.com/wireguard-go/about/).
The tunnel library is [on JCenter](https://bintray.com/wireguard/wireguard-android/wireguard-android/_latestVersion), alongside [extensive class library documentation](https://javadoc.io/doc/com.wireguard.android/tunnel).