HelloNotes app icon

Think in plain Markdown.

A fast, private, local-first knowledge base for your Mac. Wiki-links, backlinks, a graph view, diagrams, math and on-device AI — over notes that stay plain files you own.

Requires macOS 15 or later · No account · No cloud required

Everything a knowledge base should be

Powerful where it counts, and out of your way everywhere else.

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Local-first, plain files

Your notes are ordinary .md files in a folder you choose. No lock-in, no database, readable in any editor.

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Live Markdown

A native editor with live styling, syntax-highlighted code, inline LaTeX math, Mermaid diagrams, callouts and hidden comments.

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Connected thinking

[[Wiki-links]] and heading links with autocomplete, backlinks, unlinked mentions, note transclusion, and an interactive graph view.

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Find anything

Full-text search, “Open Quickly”, nested #tags with autocomplete, bookmarks, daily notes and templates.

On-device intelligence

Summarise, suggest tags and links, expand a stub, or “ask your vault” — powered by Apple Intelligence, entirely on your Mac.

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Version history with Git

Built-in Git: initialise a repo, browse a note’s history and restore earlier versions. Export to HTML or PDF anytime.

See it in action

A calm, keyboard-first editor with real power under the hood.

LaTeX math and Mermaid diagrams rendered inline
Callouts, properties and rich Markdown
Ask your vault — on-device AI answers with citations
Graph view of how notes connect
The notes sidebar — your files, local and private
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Private by design

HelloNotes collects nothing. There’s no account, no analytics and no tracking. On-device AI runs locally and never sends your notes anywhere. Read the privacy policy →