Yes, it's possible to create a VPN app using Flutter and Dart, but it involves integrating native platform code since Flutter itself does not provide a direct way to interact with low-level VPN APIs. Here's how you can approach it: Steps to Build a VPN App in Flutter: Understand VPN Requirements: VPNs require access to device-level network configurations, which typically involves using native platform APIs like: Android: VpnService iOS: NEVPNManager Flutter and Native Code Integration: Use platform channels to communicate between Dart and native code (Kotlin/Java for Android, Swift/Objective-C for iOS). The VPN functionality (like configuring servers, protocols, and connections) will be implemented natively, while the Flutter UI will handle user interaction. Use Third-Party Libraries: Android: Use libraries like strongSwan or OpenVPN for Android. iOS: Use Apple's Network Extension framework. Consider OpenVPN or WireGuard SDKs for both platforms. Flutter Plugins: You can either create a custom plugin for your app or check for existing plugins. For example: flutter_vpn: A plugin for VPN functionality, though it might require modifications or additional work for your use case. Backend Server for VPN: A VPN app typically requires a server-side component to manage VPN connections. Set up a VPN server using tools like: OpenVPN WireGuard Shadowsocks Use APIs to interact with the server and manage user accounts, subscriptions, etc. Implement Features: UI: Create an intuitive interface for connecting to VPN, selecting servers, etc. Authentication: Add user authentication and subscription features. Protocols: Support popular VPN protocols like OpenVPN, IKEv2/IPsec, or WireGuard. Security: Ensure encryption and secure handling of user data. Testing: Test thoroughly on both Android and iOS devices for connection stability, speed, and security. Compliance and Permissions: Obtain the necessary permissions for VPN access. Comply with app store guidelines (e.g., App Store and Google Play policies for VPN apps). Challenges You May Face: Working with platform-specific VPN APIs. Setting up a secure and reliable VPN server. Meeting app store requirements for VPN apps. Handling user privacy and data securely.