Chapter I · The call
Read, annotate and write
without moving elsewhere.
Open a PDF, write on it by hand, turn the marks into text and the text into an idea. All in the browser, all still yours.
Chapter II · The entrance
All your material
under one roof.
PDFs, DOCX, images, mind maps and notebooks open in tabs — and side by side, in split view. You can compare two sources, annotate one and write from it without switching apps or losing the thread.
The gain is not having more features: it is no longer rebuilding the context every time you sit down to study.
Chapter III · The study
Three desks, a single room.
The document leads; the tools follow.
Ink, highlighter, notes and stamps appear when you need them and step aside when you only want to read. Scanned pages become searchable text through OCR.
A canvas without edges for ideas that do not fit a list.
Link concepts, open branches and pull the camera back to see the whole argument. Stella, Arbor and Orbis arrange the same material three ways — and the AI raises the first skeleton from what you read.
Writing starts where reading stopped.
Write in DOCX with ABNT formatting and citations resolved, with your annotated sources open alongside. It exports ready to hand in. In preview, improving every week.
Chapter IV · The connections
Your files come along — when you say so.
Notebooks, annotated PDFs and maps are written to your device. When you connect Google Drive, Dropbox or a local folder, Lectorium sends only what you picked — and keeps a sync queue that resumes on its own after the network drops.
Opened it on another device? The notebook arrives whole, with the marks on the same page. And the access you granted can be revoked at any time.
See how we handle data
Chapter V · The open sky
Nothing has to pass through us.
Your documents stay on your device or in the cloud you choose. The AI uses your own key and talks straight to Google. There is no central copy, no token bundle, no fine print.
On your device, or in your Drive and Dropbox. Never on a server of ours.
Optional, with your Gemini key stored locally. You switch them on and off whenever you want.
A policy and terms written to be read before the first use.
Chapter VI · The banquet
What is read alone is thought through better in company.
Bring your library into one place. It opens in the browser, works offline, with Google sign-in.
Open Lectorium