I’m also posting this from Mlem. What works works pretty well, but it is obviously still in beta for a reason, and the biggest reason is that it is missing some major things that make day to day use very difficult. It is missing ability to see your subscribed communities unless you favorited them. It is missing the ability to search for communities, and to see anything you’ve already posted (your profile) or if you have a notification or reply. (Oh, and the ability to edit your posts…I saw a typo in this and had to go to the web version to fix it). All of those core features need to be added pretty quickly.
Jerboa on Android is not perfect either but it is much further along in development at this stage.
Maybe not…there is no place for me to see subbed communities, nor to search within the app. I’m using version 0.0.6, which appears to be the latest in TestFlight. Until the development gets a little further, I’m just sticking with a pinned web app.