A native Markdown editor for Mac, iPhone, and iPad — with live Mermaid diagrams, KaTeX math, and GFM tables, no cloud required.

Clearly renders as you type: Mermaid diagrams, KaTeX equations, and GitHub-Flavored Markdown tables all show live in the preview pane, not just after export. It's a genuinely native Swift app across Mac, iPhone, and iPad, sharing the same document format everywhere without a subscription or account.
Most Markdown editors that support diagrams and math do it through a web view wrapping a JavaScript renderer. Clearly does the same rendering natively, which means it stays fast and consistent across every Apple device it runs on — write a diagram on your Mac, open the same file on your iPad, and it looks identical.
Completely free and open source.


Writing & Documents · Free · Pro $2.99
A focused Markdown notes app with a gorgeous editor, hashtag organization, and an Apple Design Award on the shelf.


Writing & Documents · $49.99 · one-time
The writing app that made focused, plain-text Markdown a genre — a fixed mono typeface, a tuned measure, and nothing else to fiddle with.


Writing & Documents · Free
Seven dots, seven scratch pads — a tiny, gorgeous place to hold the text you would otherwise lose in a pile of untitled files.