Matter brings newsletters, feeds, and read-later tools together in a single interface, positioning itself as a reading client for the open web. Built by a small team of avid readers, the app is available for iPhone, iPad, and the web. Its design and functionality have earned three Apple App of the Day honors.

Users can save articles, social media threads, PDFs, YouTube videos, and podcast episodes for later. Matter also delivers free and paid newsletter subscriptions from Gmail or through a unique Matter email address, and lets readers follow writers and feeds wherever they publish. Video and podcast content can be transcribed into time-synced text, while articles and newsletters can be converted into audio playlists using speech synthesis.

Reading tools include highlighting, smooth highlighting, quoteshots for sharing, offline access, full-text search, tagging, and queue controls for reordering and filtering saved items. Matter also supports audio highlights and syncing highlights to other knowledge-management tools, helping readers capture, organize, and revisit what they learn.