Native to macOS

Markdown,
without the machinery.

Write in beautifully rendered Markdown. Switch to the source whenever you need it. No second pane, no database, no Electron.

Download for Mac macOS 14+ · 14-day free trial · One-time purchase
Munin app icon
field-notes.md
RenderedSource
FIELD NOTES 1,284 words · 1,716 tokens

Ideas need somewhere
quiet to land.

Munin keeps the tools close and the machinery out of sight. What you write is always plain Markdown in a folder you choose.

“The document is the preview.”

What matters

  • Your files remain yours
  • Formatting stays editable
  • Nothing interrupts the thought
12
See why it’s different

One document. Two honest views.

Rendered when you want to write.
Raw when you need the truth.

Most editors make you pick a side. Munin gives you editable rendered and source modes, switching in place while preserving your position.

field-guide.md
FIELD GUIDE · 73 WORDS · 98 TOKENS

A field guide to focus

Good tools don’t demand attention. They make room for it.

Munin turns Markdown into a document as you type, while every character remains yours to inspect.

The document is the preview.
# A field guide to focus

Good tools don’t demand attention.
They make room for it.

Munin turns **Markdown** into a
document as you type, while every
character remains yours to inspect.

> The document is the preview.
⌘ R to switch views

Small app. Serious editor.

Built for files, not a platform.

01

Native speed you can measure

Type at full speed in a 50,000-word document. Munin responds in milliseconds, opens quickly, and stays out of your battery.

1ms median keystroke response
02

Your folder is the workspace

Open a folder and start. Keep several folders in titlebar tabs. No vault, index database, proprietary library, or sidecar files.

03

Ready for files that change

Git pulls, agents, and other editors can update a document while Munin preserves your cursor and scroll. Conflicting local text is kept in macOS file versions.

04

Tokens, not just words

See the token count alongside words and characters before your Markdown heads to an LLM.

05

Plain files. Fully local.

No account and no telemetry. Use Git, iCloud Drive, Dropbox, or nothing at all.

06

Know where you are

Source-accurate line numbers stay visible in rendered mode. An outline rail turns headings into a map you can navigate.

07

Smaller than a photo

The complete app is about 10 MB. It installs in seconds because macOS already provides the system frameworks it needs.

No “minimal” excuses

The rest of the editor is here too.

Munin keeps the interface quiet without leaving the useful parts out.

A

Write comfortably

  • Spell checking
  • Focus and typewriter modes
  • Seven reading themes
  • + Insert blocks on any blank line
B

Find your way

  • Search across the workspace
  • Find and replace
  • Expandable document outline
  • Formatting at the selection
C

Rich Markdown

  • KaTeX mathematics
  • Mermaid diagrams
  • Paste and drop images
  • ¹ Footnotes
D

Take it anywhere

  • PDF PDF export
  • </> HTML export
  • Git, iCloud and Dropbox
  • Fully offline

Nothing between you and the words.

Make Markdown feel
like writing again.

Try Munin free for 14 days. Pay once to keep it.

Download for Mac No account · No telemetry · About 10 MB