A quiet, beautiful, native app for your (and your agents’) Markdown files.
Built from the ground up for reading, editing, and browsing Markdown.


Source & preview
Write raw Markdown, then flip to a rendered preview and back. Scroll position stays in sync.
iA Writer Quattro
The same typeface behind one of the most respected writing apps, bundled and tuned for comfortable reading.
Live syntax highlighting
Headings, bold, links, code, and more — all highlighted as you type. Syntax markers dim to keep content in focus.
Smart formatting
Toggle-aware bold, italic, and link shortcuts. Paste a URL onto selected text to wrap it as a link.
Line continuation
Press Return in a list, task, or blockquote and the structure continues. Empty items exit cleanly.
Interactive tasks
Click a checkbox in preview to toggle it — the change writes straight back to the source file.
Code blocks
Fenced code blocks render with syntax highlighting for 16+ languages, from Swift to TypeScript.
Dark mode
A warm, custom-tuned color palette for both light and dark — not just inverted system colors.
Folder-native browsing
Add any folder as a Location. Browse, create, rename, and organize files without leaving the app.
Live filesystem sync
External changes from git, the terminal, or other editors refresh instantly. No manual reload.
Adjustable text size
Scale everything proportionally — body text, headings, code, and column width move together.
Copy file paths
Quickly copy a note’s relative or absolute path from the context menu. Handy for linking across repos and docs.