I've been wondering why the default font size in Sync is so tiny. It would be a better onboarding experience for new users if Sync was more readable from the get go.
I highly recommend Circe too. Both of Miller's books are two of my favorites of the last decade, and I think Circe is the better of the two if I had to pick.
Artifact is an interesting app that learns from your viewing history. It's made by the creators of Instagram, and it can do AI summaries of articles. There's also the ability to have discussions with others, but that can be ignored.