Open-source Android proxy client
Connect to any SOCKS5, HTTP, or HTTPS proxy in one tap.
- One-tap connect — Tap a proxy card to connect, tap again to disconnect
- Auto protocol detection — Automatically detects SOCKS5, HTTP, or HTTPS
- Country flag detection — Detects and displays the proxy exit country
- Kill switch — Blocks all traffic if the proxy connection drops
- Real-time stats — Live upload/download speed on each proxy card
- Auto-reconnect — Smart reconnection with exponential backoff
- Boot persistence — Reconnects automatically after device restart
- Multi-profile — Save and manage multiple proxy configurations
- Lightweight — Pure Kotlin, no native libraries, no third-party dependencies
- Android Studio Hedgehog or later
- Android SDK 34+
- Kotlin 1.9.20+
git clone https://github.com/ceorkm/Kryon.git
cd Kryon
./gradlew assembleDebugadb install app/build/outputs/apk/debug/app-debug.apk- Open Kryon
- Tap + to add a proxy (host, port, optional username/password)
- Tap the proxy card to connect
- Tap again to disconnect
The app auto-detects whether your proxy speaks SOCKS5, HTTP, or HTTPS — no manual configuration needed.
| Setting | Description |
|---|---|
| Kill Switch | Blocks all internet traffic when the proxy disconnects (on by default) |
| Auto-connect on boot | Reconnects to your last proxy after device restart |
| Battery optimization | Guides you to disable battery restrictions for reliable background operation |
app/src/main/java/com/proxyconnect/app/
├── data/
│ ├── ProxyProfile.kt # Profile model + repository
│ ├── ProxyConfig.kt # Active config + persistence
│ └── FreeProxies.kt # Default proxy list
├── proxy/
│ ├── PacketForwarder.kt # TUN packet dispatch
│ ├── TcpConnection.kt # Per-connection proxy tunneling
│ ├── Packet.kt # IP/TCP/UDP packet parser & builder
│ ├── FakeDns.kt # DNS interception
│ └── TrafficStats.kt # Speed tracking
├── service/
│ └── ProxyVpnService.kt # VPN lifecycle & reconnection
├── receiver/
│ └── BootReceiver.kt # Auto-connect on boot
├── ui/
│ ├── MainActivity.kt # Main proxy list screen
│ ├── ProxyAdapter.kt # Proxy card with flags & stats
│ └── SettingsActivity.kt # App settings
└── ProxyApp.kt # App initialization
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
MIT License. See LICENSE for details.