Privacy Policy

Last updated: July 23, 2026

What stays on your device

Mark is a local-first Markdown editor. Every document you write, every setting you choose (theme, font size, reading style, and so on), and every tab you have open is stored only on the device you're using it on — in your browser's local storage, or your operating system's local app storage on desktop and iOS. None of it is uploaded to a server, because Mark doesn't have one. There is no account to create, no sign-in, and no server-side copy of anything you write.

What Mark never does

• No analytics, telemetry, or usage tracking of any kind.
• No advertising, and no ad networks.
• No crash reporting service that sends data off your device.
• No selling, sharing, or otherwise disclosing your data — there is none of it on our end to disclose.

Network requests Mark does make

Mark is a static app with no backend, but a few features genuinely do reach the network — always as a direct result of something in your own document or something you click, never on their own initiative:

• Remote images. If a document you're viewing references an image by URL, your device loads that image directly from wherever it's hosted, the same way any web page would.
• Links you click. An email address in your document opens your own mail app; a set of coordinates opens Google Maps; a runnable code block's "Run" button opens LiveCodes in a new tab. Each of these only happens when you click it, and each goes directly from your device to that destination — Mark itself isn't in the middle of it.
• Desktop update check (optional, off by default). The desktop build can check a version-info URL for a newer release, but only when a distributor has explicitly configured one — this repository's own default build does not, and the Mac App Store and iOS builds never include this feature at all, since app-managed updates aren't permitted there.

iOS-specific access

On iOS, Mark only ever reads or writes a file or folder after you explicitly choose it through the system's own file picker — the same permission model iOS uses for every app. Sharing text or a file into Mark from another app hands that content to Mark directly through iOS's own Share Sheet; it's read once, used to create a document, and nothing about it is sent anywhere else.

Children's privacy

Mark isn't directed at children and doesn't knowingly collect information from anyone, of any age — for the same reason as everything above: it doesn't collect information at all.

Changes to this policy

If this policy ever changes, the "last updated" date at the top of this page will change with it.

Contact

Questions about this policy can be sent to [email protected].