Relay turns your Android phone into a secure hotspot for your Windows PC — over an encrypted WireGuard tunnel, with no root, no account, and no server in between. Pair with a QR code or a 2-digit number and you're online in seconds. It handles TCP/UDP, survives Wi-Fi switches and DHCP changes, and keeps DNS/IPv6 traffic locked inside the tunnel. Kotlin/Compose on Android, .NET 8/WinUI 3 on Windows, Go-based WireGuard core with gVisor. Open source (GPL-3.0), with real everyday users.