ZeroTier One for iphone from ZeroTier Inc
ZeroTier One for iOS is an iOS application that allows you to join ZeroTier networks as VPN connections on your iPhone, iPad, or iPod Touch. The application provides you with a VPN-like experience on your mobile device, which helps you to protect yourself against online threats and access the internet securely from anywhere. It is used as a faster alternative to VPNs, to provide a seamless hybrid or multi-site/multi-provider cloud backplane, for remote collaboration and distributed teams, and for Internet of Things (IoT) applications to provide direct end-to-end connectivity to specialized devices.
This application allows you to switch between multiple VPNs.