Omphalis

Omphalis is a read-later and comprehension app that cleans up saved articles, PDFs, podcasts and videos, explains difficult passages beside the text, and lets readers take notes, ask cited questions or listen.

Omphalis is a reading app built for the articles, papers, podcasts and videos people save because they want to understand them, not just collect them. Anything saved is turned into a clean reading page: articles without ads or pop-ups, episodes and talks as transcripts with speakers and timestamps, and PDFs with columns and footnotes merged into a single reading order (a trial or paid feature). A section map shows the structure of a piece so a reader can jump to the part worth the time. The distinguishing feature is how it handles difficulty. Passages that carry a dotted underline open an explanation beside the text: a term defined, a claim traced to its source, an idea expanded. Readers can also select any phrase and choose Learn more to get a deeper explanation without leaving the piece. Highlights and notes stay attached to the passage and collect in Marks, and they can be moved into notebooks. A short summary opens each item, meant to help decide where to begin rather than replace reading. Questions work at three scopes: the current piece, a notebook of gathered sources, or the whole Library. Answers cite the passages they drew on, so each point can be traced back to the original words. Typing is optional in the web app, where a question can be spoken. Items can also be listened to, and the phone apps allow downloads for offline reading or listening. The audience is people with a backlog of dense material: students, researchers, analysts and curious readers who save a 60-page report or a two-hour interview and rarely finish it. Input is broad, covering web articles, newsletters, PDFs, EPUBs, Word documents, podcasts, YouTube videos and voice notes, plus feed subscriptions such as Substack. Access comes through the web app, iPhone and Android apps, and Chrome and Firefox extensions. Among alternatives, it sits between read-later tools that mainly store links and general AI chat tools that summarize documents. Its approach keeps the source on screen and treats explanation, notes and questions as layers on top of it. Short, easy content gains little from it, a point the product itself concedes.