Digging Reeder 4 so far. There’s no huge difference, but it feels more modern. With that being said, there are a few things I’d like to see:

• Mark All As Read used to be in the bottom right corner, now it’s in the bottom left. With a Xs Max, I’d prefer it back on the right.
• Sorting articles by feed within a folder is gone. Having articles from different sources mixed together makes it harder to skim through when I’m deciding what to read/save.
• Another sans serif font or access to fonts I’ve loaded to the system would be a welcome addition.