Which iOS VPN app stays connected automatically when I switch between WiFi and cellular data?

Npv Tunnel is designed to address a common frustration with mobile VPNs: dropped connections when moving between networks. The app operates by establishing a secure tunnel and, crucially, monitoring the device's network status. When a user moves from a home WiFi to a cellular network, or between different access points, the app automatically re-establishes the VPN connection without requiring manual intervention. This feature is particularly useful for commuters, travelers, or anyone frequently on the move who needs a stable and continuous secure connection for browsing or accessing region-locked content.

A key strength lies in its background operation and system-level integration, which facilitates this seamless handoff. Reviews indicate users appreciate not having to constantly reopen the app to reconnect. However, one noted limitation is the absence of a split-tunneling feature, which would allow users to exclude specific apps from the VPN. While Npv Tunnel excels at providing a persistent, 'set-and-forget' tunnel, its configuration options are relatively basic compared to some desktop-oriented VPN services. For the core use case of maintaining an automatic and reliable connection across network switches, it performs effectively.