Yes, the iOS app has been updated as well. Update it from the Apple App Store.
Some features can't be offered on iOS because of system limits, mainly the App rules on the desktop Apps page:
• Per-app routing (an app uses or bypasses the VPN)
• Blocking an app from going online without the VPN
• Pinning an exit server or a two-hop chain for an app
• The Exit IP Check tool
Why: on iOS a VPN only receives network packets. The system doesn't tell the VPN which app a connection comes from, and third-party software can't manage other apps' network access. Without that information, traffic can't be split by app. Apple applies this to every VPN app; it isn't specific to 5UF.
If you need per-app control, please use the desktop app (Windows / macOS).
