Silvio Rizzi has Reeder 4 for the iOS in the iOS App Store and Reeder 4 for the Mac in the Mac App Store for FREE (regularly $4.99/$9.99) for a limited time. This is the second time we’ve seen these apps discounted this much. It’s a great feed reader app and it’s the one I prefer to use.
Reeder is my feed reader of choice and it supports multiple services like Feedbin, Feedly, Feed Wrangler, Fever, FeedHQ, Inoreader, NewsBlur, The Old Reader, BazQux Reader, Pocket, and Instapaper. If you don’t want to use a third-party service, Reeder also supports local/standalone RSS. It has a Bionic Reading mode, in-app Read Later service which syncs with iCloud, image previews in the articles list, a much-improved article viewer, and many more features.