ReadKit is a full-featured read later and RSS client that supports all major provider and it has a built in RSS engine too.

SUPPORTED RSS SERVICES:
• BazQux
• Feedbin
• Feedly
• Feed Wrangler
• Fever
• FreshRSS
• Inoreader
• NewsBlur
• The Old Reader
• Tiny Tiny RSS
• Built-in RSS

SUPPORTED READ LATER AND BOOKMARKING SERVICES:
• Instapaper
• Pocket
• Wallabag
• Pinboard

FEATURES:
• All your reading in one place, multiple account support.
• Sync with all major RSS aggregator and read later provider or use it with built-in RSS engine.
• Feed and folder management for RSS services.
• Folder and tag management for Instapaper, Pocket, Wallabag and Pinboard.
• Offline reading and image caching.
• Background syncing.
• Built-in reader mode to extract full content of articles.
• Automatic reader mode.
• Customizable user interface.
• Save content for offline viewing.
• In-app browser for viewing links and other references.
• Preference to display unread items on the app badge.
• Search for articles by content, title or author.
• Full support for hardware keyboard.
• Import and export of feed subscriptions via OPML.
• Support for light and dark mode.
• Mark articles as read on scroll or mark them all by a tap of a button.
• Mark as read above or below from context menu.
• Filter articles by read or starred status.
• Send articles in email.
• Share sheet support.