Steps to reproduce:
Download the latest Orion for both macOS and iOS. Enable Sync in the settings.
I expected the bookmarks I set in the macOS version of Orion to show up on iOS. I also expected to see the open tabs somewhere on the iOS app. Neither occurred on either of my iOS devices (listed below).
Orion, OS version; hardware type:
macOS 12.3.1 (MacBook Pro M1 Max), iOS 15.1.1 (iPhone 13 Pro), iOS 15.4.1 (iPad Air 5th Gen)