Notebook
A structured editor for pages, code, math, diagrams, callouts, backlinks, and version history. Nested pages keep large projects organized; the editor is mobile-aware with voice dictation on the go.
Features
One workspace, every part of your thinking.
The four pillars below carry the daily workflow; the details around them keep knowledge connected, portable, and yours.
Learn
Turn notes into long-term memory. Generate review cards from your own material and let an SM-2 spaced-repetition schedule decide what needs attention next.
Boards
Attach visual canvases to any note. Diagrams, sketches, and systems thinking that stay connected to the words they grew from.
Prompt Lab
Save reusable prompts with variables, run them on pages or selections with your choice of provider, and sync the whole library to GitHub.
And the details
Small things that compound.
Voice capture
Dictate thoughts into structured text and keep the transcript beside the note it became.
Contextual AI
Ask questions, rewrite selections, and summarize pages — grounded in the note you're in.
Version history
Every AI edit keeps a restore point. Roll a page back to any previous state.
Bring your own keys
Use your own OpenAI, Anthropic, or Gemini keys — stored in an encrypted vault, never resold.
GitHub sync
Your Prompt Lab library syncs to a GitHub repository, versioned like code.
Public share pages
Publish any note as a clean, read-only page with a link you can revoke at any time.
Math & diagrams
KaTeX for equations, Mermaid for diagrams, Excalidraw for freeform sketching — native in the editor.
Ten languages
The interface speaks English, French, Spanish, German, Portuguese, Italian, Japanese, Korean, Chinese, and Arabic.