Write and preview
A native editor with live rendering, outline, search, image assets, KaTeX, Mermaid, and code highlighting.
macOS · iPhone · iPad
GrayCat Markdown
Write, preview, and publish Markdown on Mac, iPhone, and iPad. Keep documents in a local folder or in iCloud Documents.
Mac version 2.6.0 requires macOS 12.0 or later. It is signed with Developer ID, notarized by Apple, and includes automatic updates. Mac, iPhone, and iPad versions are also available on the App Store.
Inside the app · 6 screenshots
Editing, preview, publishing, and export
Screenshots from GrayCat Markdown 2.6.0 show live preview, rich rendering, AI scope confirmation, version history, and export.
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Editor and live preview
Writing, preview, publishing, and export
Export and publish
Export HTML, PDF, and long images, plus DOCX on Mac. Publishing previews help prepare content for WeChat Official Accounts, Zhihu, and Toutiao.
Mac and mobile
Use local files or your own iCloud documents and continue writing on Mac, iPhone, and iPad.
Optional AI
Use an on-device model where supported, or connect a cloud provider with your own API key. The app shows the selection or full-document scope before text is sent.
Your documents stay as Markdown files
GrayCat Markdown does not require a GrayCat account. Documents stay in a local folder you choose or in Apple iCloud; the developer cannot access your iCloud documents.
Cloud AI is optional. Requests go directly from your device to the provider you configure; GrayCat does not route them through its own server. Read the privacy policy for the complete scope.