I’ve used Ivory for Mac for quite a while during the beta period – it’s really a great app to browse Mastodon! It feels like the old Tweetbot for Mac and of course Ivory for iOS, which are great apps as well.
My favorite feature is the timeline sync between the iOS and macOS version. As it is a Catalyst app, it has some quirks here and there, but nothing hugely bothering all in all. Unfortunately there are some things still missing, like custom instance emoji, a synced notifications tab or language selection when posting (just to name a few). Some are on Tapbots roadmap, which is great. Though, that was the reason to „only“ give 4 stars. Can’t wait for more updates!