The original decentralized social network. Still works great today - I really like NetNewsWire as a reader, it has good read state sync between macOS and iOS.
I am using Reeder 4 for a while now on macOS and iOS. The UX is very well thought and still has all the features I need.
Reeder 5 is out and is fantastic. It also has a built-in RSS aggregator that is synced to all of your Apple devices via iCloud.
You’re right, I forgot it was version 5 already. Time flies!
I use Reeder on iOS connected to a miniflux instance (via a google reader compatible API). Reeder has a feature where it can mark an article you scroll past as read which for me is a must - with most items I have titles are enough and I don’t want to open every single article to mark it as read.