Provably offline
Sandboxed with no network entitlement — the macOS kernel itself blocks every outbound connection. Privacy you can verify with one command, not a promise.
For the markdown your AI leaves behind
A calm, private markdown reader for macOS.
Your AI tools leave behind piles of markdown —
plans, specs, notes to your future self.
calmmdown shows only your .md files, beautifully,
in a reader that can't phone home.
Free · Apple silicon & Intel · macOS 14+ · arriving soon
Try it
Why calmmdown
Everything a reader needs. Nothing it doesn't.
Designed for focused, comfortable reading — and built so privacy isn't a setting you trust, but a guarantee the system enforces.
Native & fast
Built on Apple's TextKit — the same engine behind Pages and Xcode. Instant rendering, real text selection, and no web engine in sight.
Four calm themes
Light, Calm, Warm, and Dark — each with its own accent and reading colors, tuned for long, comfortable reading sessions.
Projects & file tree
Point it at a repo and see only the markdown — no code, no config, no node_modules in the way. Projects, a flatten view, a markdown-only filter, and sticky headers keep the noise out.
Tabs & navigation
⌘-click to open files in tabs. A minimap table-of-contents tracks where you are and jumps you anywhere with a click.
Reads everything
GitHub-flavored markdown — headings, tables, task lists, code blocks, and footnotes — with adjustable font size and serif or sans faces.
Why I built this
I build mostly in the terminal now, with AI agents that generate a constant stream of markdown — plans, specs, decision logs, notes to my future self. But they kept getting lost in the project, swallowed by all the code and config — and a full IDE felt like more than I needed just to read them.
So I made calmmdown: a quiet place to read only the markdown, that never touches the network.
— built because I needed it, and figured you might too
Privacy, enforced by the OS
It can't phone home. By design.
calmmdown has no internet access at all — so nothing it reads can ever leave your Mac. Your project stays yours.
The markdown your AI leaves behind can be deeply sensitive — your architecture, your plans, the thinking behind your code. It ships without the network entitlement, so the macOS sandbox denies every outbound connection at the kernel level — even a remote image inside a markdown file. You don't have to trust the code; you can check the binary yourself.
$ codesign -d --entitlements :- calmmdown.app
# app-sandbox ............. true # files (read-only) ....... true # network ................. none Make it yours
Four themes. Pick one and the whole page follows.
The same palettes ship in the app. Tap a theme to preview it right here.
Read your notes and docs, beautifully.
No accounts, no telemetry, no network.
Just your files.
In final testing Read calmly.
Read calmly.
Keep it private.
calmmdown is putting on its final coat of calm — a small, native app for macOS, landing very soon. And like the app itself, getting it will cost you nothing: no account, no tracking, nothing to sign up for.
Free · Apple silicon & Intel · macOS 14+