Notes & Study Tools

Think. Write. Draw.

Markdown notebooks, spaced-repetition flashcards, and an infinite canvas, right alongside your books.

A Gnos notebook with Markdown and rendered math

Notebooks

Notes that keep up.

Write in Markdown, render live. LaTeX equations, code blocks, and headers all format as you type, attached to any book.

  • Full Markdown with live preview
  • LaTeX math rendered with KaTeX
  • Code blocks with syntax highlighting
  • Source and read-only views
The Gnos flashcard study view

Flashcards

Study anything.

Build spaced-repetition decks from your notes, or import the ones you already use. Study smarter, not harder.

  • Spaced-repetition scheduling
  • Create from any notebook
  • Import existing decks
  • Track progress over time
The Gnos sketchbook powered by Excalidraw

Sketchbook

Room to think.

Sketch diagrams, annotate PDFs, and map ideas on an Excalidraw whiteboard, without leaving the app.

  • Infinite canvas powered by Excalidraw
  • Shapes, arrows, and freehand drawing
  • Import PDF pages as a background
  • Saved alongside your library
Gnos in light mode showing the sidebar and library

Works everywhere

Stays next to your reading.

Notebooks, flashcards, and sketches live in the same window as your books. No app switching, no losing your place.

  • Split-pane layout, books and notes side by side
  • Multiple tabs open at once
  • Everything saved locally and instantly
  • Works completely offline

Study smarter.

Sign up for early access and bring your study tools home.