See
https://forum.wiimhome.com/threads/...-high-res-room-filling-audio.7168/post-147498 and Audio Pro's and Audio Pro's FAQ (at
https://audiopro.com/pages/the-new-w-generation) where they (perhaps sniffily) say "Room correction has been removed from our app. We are not satisfied with the current performance. If the performance meets our criteria in the future we might add it." Equally, there's no guarantee that WiiM won't withdraw Roomfit or other features they might see as not fully licensed by Audio Pro. I think the ins and outs of this were already discussed in the first linked thread.
Full interworking with Wiim devices or the Wiim Home app aren't guaranteed by WiiM nor Audio Pro, so you're probably better sticking with the app that's recommended for each manufacturer's device.