Privacy
Last updated: 27 July 2026
Mdown collects nothing. The app is built without the network entitlement, so there is no server to send anything to and no account to hold it. This page exists because the App Store and the Chrome Web Store require one.
Who we are
Mdown is developed by Vadim Semenko, trading as ZeroSix Studio, and published under the MIT licence. Questions about this policy go to [email protected].
What the app stores
Reading positions, the list of recently opened documents and your appearance settings live in the app’s own container on your device. Nothing is synced, and deleting the app deletes all of it.
- Per-file reading position, keyed by file identity
- Theme, body and code font, column width, spacing and zoom
- The list of recently opened documents
The documents themselves are never copied anywhere: Mdown opens the file you point it at, renders it, and never writes to it.
What leaves your device
Nothing. The macOS, iPadOS and iOS app has no network entitlement at all — not a restricted one, but none — and the build fails if it is ever added. There is no analytics SDK, no crash-reporting SDK, no advertising and no telemetry of any kind.
Remote images inside a document are not loaded unless you allow them, because loading one would be a network request the app deliberately cannot make.
The browser extension
The extension needs access to pages in order to recognise a Markdown file wherever you open one — including local files, when you enable “Allow access to file URLs”. Rendering happens locally inside your browser. The only request it ever makes is re-reading the document you already opened, so the view can refresh when the file changes.
Its settings (theme, column width, fonts) live in your browser’s own sync storage; reading positions live in local storage. Neither reaches us.
| Data | Collected | Shared |
|---|---|---|
| Document contents | No | No |
| File names and paths | No | No |
| Usage analytics | No | No |
| Browsing history | No | No |
| Crash reports | Only if you opt in through system settings | Apple only |
Accounts and permissions
There is no account and no sign-in. The app asks for no system permissions: no camera, no microphone, no contacts, no location, no notifications. It reads the file you open, and only that file.
Children
Mdown is not directed at children under 13, and since it collects nothing, it cannot knowingly collect their data either.
Your choices
- Delete everything: remove the app, or the extension — all local data goes with it.
- Ask us anything about data: email [email protected]and you’ll get an answer within two working days.
Changes
If this ever changes, this page and the date above change first, and the code follows. A new network call would mean rewriting this page before shipping it — that order is deliberate.