Would love a Mac app, too!
Yeah, many people want a Fig app in the Mac App Store.
The developers weren’t as interested though, not to mention that they’ve been dead silent for more than a month now. The possibility of Fig app for macOS is still in the realm of possibility though. Take a look at the topic I linked above.
The already existing Fig app for iPad should already work on Apple Silicon Macs, but I cannot imagine that it is a good experience. That is why people have suggested to the developers that they should use Mac Catalyst, along with Universal 2 now that we have Apple Silicon Macs. Mac Catalyst and Universal 2 would make it much easier to port the Fig app for iPad and turn it into a great Mac app that’s ready to be put in the Mac App Store. Regardless, the developers remain hesitant.
Again, I would recommend taking a look at the entirety of the topic that I have already linked.