IsVPNOn - Windows VPN Status Monitor

A lightweight Windows application that runs in the system tray and monitors your VPN connection status by checking your public IP address.

Application interface

📋 Features

• 🖥️ System Tray Integration - Runs discreetly in the notification area
• 🎯 Real-time Monitoring - Continuously checks VPN connection status
• 🎨 Visual Indicators - Color-coded icons (Green = VPN active, Red = VPN inactive)
• 💾 Settings Persistence - Automatically saves and restores your configuration
• 📊 Multiple IP Services - Supports various IP checking services
• 📦 Portable - Single executable, no installation required

🚀 Quick Start

Download

Download the latest release from the Releases page.

Installation

1. Download IsVPNOn-vX.X.X.zip
2. Extract to any folder
3. Run IsVPNOn.exe

No installation required - it's a portable application!

Status Indicators

• 🟢 Red Icon - VPN is NOT active (your real IP is visible)
• 🔴 Green Icon - VPN IS active (using VPN IP)
• 🟡 Yellow Icon - Connection error

🛠️ How It Works

1. Set Your Normal IP: Enter your regular public IP address
2. Select IP Service: Choose from supported IP checking services
3. Start Monitoring: The app periodically checks your current IP
4. Get Visual Feedback: System tray icon changes color based on VPN status

IP Checking Logic:

• If current IP ≠ your normal IP → VPN is active (Green)
• If current IP = your normal IP → VPN is inactive (Red)
• If cannot reach IP service → Connection error (Yellow)

🏗️ Building from Source

Prerequisites

• .NET 8.0 SDK
• Windows 10/11
• Visual Studio 2022 or VS Code

📄 License

This project is licensed under the BSD 3-Clause License.