- Supports major RSS aggregator and read later providers, including BazQux, Feedbin, Feedly, Feed Wrangler, Fever, FreshRSS, Inoreader, Miniflux, NewsBlur, The Old Reader, Tiny Tiny RSS, and built-in RSS.
- Supports read later and bookmarking services, including Instapaper, Pocket, Wallabag, and Pinboard.
- Universal app with the same features and services supported on both iOS and macOS.
- Feed and folder management for RSS services.
- Organize subscriptions/articles into folders/tags.
- Offline reading and image caching.
- Sync in the background.
- Built-in reader mode to extract full content of articles.
- Automatic reader mode.
- Share extension that saves articles from Safari and other applications for later reading.
- Subscribe to YouTube channels and playlists.
- Customizable user interface with support for light and dark mode and color themes.
- 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 source.
- Full support for hardware keyboard.
- Import and export of feed subscriptions via OPML.
- 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 articles with apps, social media accounts, and other services via share sheet.
- ReadKit Premium unlocks all premium features and removes all restrictions on both platforms, with a monthly/annual or a one-time lifetime pass.
- Premium features include multiple accounts, unlimited feeds, manage folders and tags, reader mode, image cache, themes and app icons, import and export OPML, access to all upcoming premium features, and support for the development.
- New features in ReadKit 3 include a brand new macOS application with new design and improved functionality, improved focus-based navigation, new themes and improved theme selection, improved favicon and thumbnail detection, and various UI improvements on rendering articles.