You write while your AI stays in the margins.
Prima Lectio reads your long-form essay or micro-essay collection chapter by chapter, against what each chapter sets out to establish, and leaves its notes in the margins. It won't rewrite a line, but you will.
Every project in one place, and the exact spot you stopped.
One claim, held across a hundred pages and a dozen chapters.
An argument is built, not poured out
A long essay is not a long article. It has to hold one claim across a hundred pages: every chapter needs to know what it is proving, and you need to see the shape of the reasoning from above, not just the paragraph in front of you. Most tools hand you one endless document and leave the argument in your head.
The whole case, in view
A tree of chapters, and each chapter as a sequence of movements: the step your reasoning takes. Reorder by dragging when the case changes shape. Bring in a draft (Markdown, DOCX, ODT), export the essay whenever you want.
Matière, which keeps your sources
People, sources, concepts, case studies, places and institutions, linked to your text. The study you cited in chapter two is one click away in chapter nine, not a search through your own draft.
Prima Lectio, chapter by chapter
It reads each chapter against what it sets out to establish: does the claim land, does the evidence carry it? Quoting your sentences, never rewriting one.
A thesis that advances
A word-count goal, timed, interval or open sessions, and an essay that fills in chapter by chapter. Versions are saved on the server; every session end keeps a durable one you can restore.
Your questions about writing an essay
Your essay deserves a real reading
Upload it as it stands, or open the first chapter. 7 days free, up to 21 as you complete onboarding.