Golden Frog is currently limited to using the IKEv2 protocol on the VyprVPN app for iOS.
Golden Frog prioritizes user security and privacy, which led to the development of the Chameleon protocol (which uses the unmodified OpenVPN 256-bit protocol for the underlying data encryption) to defeat deep packet inspection, bypass regional blocks on VPN usage, and counteract ISP throttling.
To continue to drive the Golden Frog principles, we submitted the Chameleon protocol as part the VyprVPN app for iOS devices through the Apple approval process. Thus far, Apple has not accepted our requests to include the Chameleon or OpenVPN protocols in the VyprVPN iOS app.
We will continue to press the issue with Apple, and we also encourage our users
We do offer an OpenVPN setup through the OpenVPN application in the meantime, which you can find here.