What options are there for power users?
Personalisation is one of the key features of RSS readers: having a consistent design and consistent navigation across multiple sources means we can better concentrate on the tailored content. Daily falls at the first fence here, because while its styling is consistent you can’t change any of it. Breaking doesn’t make the cut either because it’s merely a Notification Area widget, and Pulp lets you make the text bigger and that’s about it.
That leaves Leaf, NetNewsWire and ReadKit. All three offer excellent formatting features that enable you to view articles exactly how you like them, but NetNewsWire doesn’t offer themes: Leaf has a light and a dark mode, while ReadKit has four different coloured themes plus Readability integration to improve feeds’ formatting and a Focus Mode that hides the sidebars so you can concentrate. ReadKit also has something superb: Smart Folders. They work just like they do in Mail, enabling you to filter your feeds for specific words or phrases, sources, timeframes or tags.
ReadKit offers lots of formatting options, Readability mode and a focus mode too.