Build a modern VPN application for Android without starting from scratch.

VPN Manager is a polished Kotlin + Jetpack Compose template designed as a foundation for creating your own branded VPN client. The project combines a modern glass-style interface with VPN connection architecture, server management, security tools, Speed Test, subscription flows, localization, and a backend-ready API layer.

The project uses Android's native VpnService as the foundation for the VPN connection layer and provides a clear architecture for connecting your own VPN infrastructure and backend services.

Highlights

The application includes a complete multi-screen VPN interface with:

• Modern dark and light themes

• VPN connection dashboard

• Global server browser

• Server categories and favorites

• Connection statistics and traffic monitoring

• Speed Test interface

• Security diagnostics

• Kill Switch

• DNS configuration

• VPN protocol selection

• Split tunneling configuration

• Subscription / VIP interface

• Advertising integration layer

• Multilingual localization

• Backend-ready REST API architecture

VPN Backend Architecture

The project includes a dedicated API layer designed for integration with your own VPN infrastructure.

The API architecture provides extension points for:

• Dynamic VPN server lists

• User authentication

• VPN configuration retrieval

• Public IP and geolocation lookup

• Speed Test node configuration

• API authentication headers

• Remote server synchronization

Remote API usage can be enabled through the centralized VpnApiConfig configuration.

The project also includes local fallback server data so the interface can be demonstrated without an external backend during development.

VPN Connection Foundation

The application uses Android's native VpnService API and includes a connection-service foundation with support for:

• VPN tunnel lifecycle

• Connection and disconnection states

• DNS configuration

• Kill Switch behavior

• Split-tunneling package exclusions

• Foreground VPN notifications

• Connection telemetry

• Traffic statistics

Production VPN tunneling, server infrastructure, authentication, key exchange, and protocol-specific networking should be connected to your own backend and VPN infrastructure.

Security Tools

The security section provides a dedicated interface for VPN-related security controls and diagnostics, including:

• Kill Switch

• DNS configuration

• VPN protocol selection

• Security diagnostics

• IP/DNS/WebRTC protection status UI

• Encrypted traffic indicators

• Cryptographic key and connection information

• Split tunneling configuration

Server Management

The server browser supports multiple server categories and provides a foundation for managing a global VPN network.

Included server-management features:

• Global server list

• Fastest server category

• Streaming servers

• Gaming / low-ping servers

• Double VPN category

• P2P servers

• Server favorites

• Server ping information

• Server load indicators

• Premium server states

• Multiple supported protocol options

The included server data is demonstration data and can be replaced with your own live server infrastructure through the API layer.

Speed Test

The application includes a dedicated Speed Test interface with:

• Download speed

• Upload speed

• Ping

• Jitter

• Selected server information

• Animated speed gauge

• Test progress and result states

The Speed Test architecture can be connected to your own test endpoints or CDN infrastructure for production measurements.

Monetization Architecture

The project includes a ready-to-customize monetization layer with interfaces for:

• Monthly VIP subscriptions

• Annual VIP subscriptions

• Lifetime purchase

• Google Play Billing integration point

• Interstitial advertising

• Rewarded advertising

• Banner advertising

• Temporary rewarded VIP access

Google Play Billing and advertising SDK integration are provided as extension points and require configuration with your own products, credentials, and production services.

Localization

The application includes localization support for:

• English

• German

• Spanish

• French

• Russian

• Chinese

• Japanese

• Korean

The localization architecture is centralized and designed to make additional languages easier to add.

Customization

Customize the project with your own:

• Application name

• Package ID

• Logo and launcher icon

• Colors and themes

• VPN backend

• Server infrastructure

• API endpoints

• Authentication system

• Subscription products

• Advertising configuration

• Languages and content

• Branding

Important

This project is provided as a development template and VPN application foundation. It does not include a proprietary commercial VPN network or ready-to-use production server infrastructure.

Live VPN services, server provisioning, authentication, protocol implementations, API endpoints, speed-test infrastructure, billing, and advertising must be configured according to your own production architecture.

Detailed setup and customization instructions are included in the documentation.