Matter is, in its maker's words, "the modern read-later app for iPhone, iPad, and web." Its homepage invites readers to "Save articles, threads, and PDFs," and adds that users can save 📝YouTube videos and podcast episodes, which Matter will "transcribe them to time-synced text." Newsletters come in through a connected 📝Gmail account or a unique Matter email address, and a web extension saves articles from Chrome, Safari and Firefox.
Matter presents listening alongside reading: it turns "newsletters, blogs, and articles into a playlist" with speech synthesis, and the homepage promises to "Switch between audio and text. Seamlessly." Readers can "Highlight while you listen without looking at the screen" and sync highlights to a 📝second brain, in the homepage's phrase. The site also lists following writers and feeds, full-text search "even when offline," and tagging to "Organize your library for quick recall." The company describes the app as "Built by a small team of avid readers" and says it has earned three Apple "App of the Day" honors. As of November 2026, the homepage opens with the line "Welcome Pocket Readers."