Since the demise of Mr. Reader, I've been looking for a full-featured, highly-customizable RSS reader for iOS. Fiery Feeds fits the bill. It supports a dozen different feed services, has many options for sharing content and even integrates read later services (Instapaper, Pocket, Wallabag) so you can read your saved articles from these services right in the app. A key feature for me is its support for self-hosted services Tiny Tiny RSS and Wallabag.
