Notebook
Capture ideas, organize knowledge, and connect what matters.
Private beta · Built for deeper thinking
Think deeply. Remember what matters.
One private workspace for your notes, connected ideas, spaced repetition, visual thinking, and AI workflows.
Free during betaNo card required
Myellin workspace
The workspace
One place for every part of your thinking.
From your first idea to something you can understand, remember, and reuse.
Learn
Turn your notes into long-term memory.
Boards
Explore ideas and relationships visually.
Prompt Lab
Build reusable AI workflows grounded in your knowledge.
Works with the tools serious workflows already use.
OpenAIAnthropicGeminiExcalidrawBYOKGitHubKaTeXMermaid
The workflow
From a fleeting thought to lasting knowledge.
Myellin helps you capture, understand, remember, and reuse what you learn.
01
Capture the source material
Notes, books, voice recordings, research, and linked pages live in one organized workspace.
02
Turn notes into memory
Create review cards from your knowledge and keep important ideas fresh through spaced repetition.
03
Put your knowledge to work
Apply reusable AI workflows to notes and ideas, without starting from scratch.
Trust
Designed for private notes and long-lived work.
AI is treated as an assistant inside your notebook, not a black box outside it. Keys are encrypted, edits are recoverable, and your workspace remains the source of truth.
AI edits keep version history.
Encrypted keys
Provider keys are encrypted at rest.
Bring your providers
AI providers (BYOK)
Portable workspace
Your notes, prompts, and boards stay yours.
Voice capture
Dictate thoughts into structured text and keep transcripts beside the notes they belong to.
Contextual AI
Ask questions, rewrite selections, summarize pages, and preserve rollback points for AI edits.
Version history
Every AI edit keeps a restore point you can return to.
Pricing
Start during beta. Keep the complete workflow.
All core features are included while the beta is open: notes, boards, flashcards, voice capture, prompt lab, and BYOK AI providers.
- Unlimited notes, boards, and flashcard decks
- Rich editor with math, code, diagrams, and callouts
- AI actions on pages and selections with rollback history
- Spaced-repetition reviews with streaks and statistics
- Prompt Lab with variables, BYOK, and GitHub sync
- Voice dictation and embedded visual boards