R3R is a reader for RSS, ESF and Atom feeds. It has a simple GUI that gathers your subscribed feeds on startup and displays them into a single list.
Newsfold Alternatives
Newsfold is described as 'A clean and modern news reader for your Feedly and Inoreader accounts - Former quote. Developed by the same author of the the Fenix Twitter app, Matteo Villa' and is an app in the news & books category. There are more than 100 alternatives to Newsfold for a variety of platforms, including Web-based, Windows, Mac, Android and iPhone apps. The best Newsfold alternative is Feedly, which is free. Other great apps like Newsfold are Inoreader, FreshRSS, Feeder RSS feed reader and RSS Guard.