Multik Sila

A VPN client for Windows and Android built with Flutter — a graphical front end for the sing-box and Xray-core engines. Supports VLESS, VMess, Trojan and Hysteria2, system-wide VPN through a TUN adapter, and split tunnelling.

Both platforms share one codebase: subscription parsing, config generation and routing rules are the same code, so the two cannot drift apart. What differs is how the engine runs — a child process on Windows, a library inside the app on Android, where the system hands the tunnel over as a file descriptor and no other process can be given it.

Features: • Subscriptions: by link, from a file, by pasting text, or from a QR code. Auto-refresh on the interval reported by the panel itself. • TUN mode — system-wide VPN: all traffic goes through the tunnel, no need to configure a proxy in each program. On Windows it needs administrator rights and the app restarts itself elevated when you switch it on. On Android it is the only mode and is always on: VpnService is the tunnel, so there is nothing to switch and no administrator to ask. • Regular mode (Windows only) — a local proxy plus automatic system-proxy setup (the previous value is saved and restored when you disconnect). Note that a system proxy only covers programs that honour it: browsers and most messengers do, games and some desktop apps connect directly and ignore it. Use TUN mode when you need everything tunnelled — the app says so on the main screen rather than leaving you to find out the hard way. • First-run wizard: language, terms of use, then your subscription — so a fresh install does not drop you onto an empty screen. • Split tunnelling: local sites go direct, everything else through the VPN. Driven by GeoSite/GeoIP rule sets that ship inside the app — no internet connection is needed for the first run. • Custom routing rules: by domain, by address, for popular services, and for individual programs — bound to the .exe path on Windows (not the process name: different programs can share one) and to the package name on Android. • Ad and tracker blocking through a separate rule set. • Latency test and automatic selection of the fastest server on connect. • Statistics: live speed, a one-minute chart, active connections, top hosts. • Diagnostics: step-by-step checks from the local port to the external IP, a table of network interfaces and routes, and a viewer for the generated core configs. • Automatic core updates with verification (Windows): a downloaded core must start, report a version newer than the installed one, and accept the current config — otherwise the update is cancelled. On Android the engines are compiled into the app and travel with it. • Fine-grained settings: DNS (including FakeIP, hosts, ECS), MUX, TLS fragmentation, NTP, IPv6 mode, TUN adapter parameters, start with the system. • Russian and English interface, light and dark themes.