MDash: Markdown Mermaid Editor

MDash 3.0: the full Markdown and Mermaid workspace is now on Mac. One app for iPhone, iPad and Mac — plain text notes, live preview and diagrams that render as you type.

MDash is a Markdown editor that keeps your notes as plain text on your device. No lock-in, no account, no sync you did not ask for. Write on iPhone, iPad and now Mac — the full workspace on every screen.

MARKDOWN, RENDERED LIVE Type plain Markdown and watch the preview update as you type: headings, lists, task checkboxes, tables, code blocks with syntax awareness, links and images. Show the text, the preview, or both side by side.

MERMAID DIAGRAMS — FREE FOR EVERYONE Describe a flowchart, sequence diagram, Gantt chart, class diagram or state machine in plain text and MDash draws it instantly. Rendering is built into the app: no network, nothing leaves your device.

NOW ON MAC Version 3.0 brings the complete MDash workspace to macOS: a three-column library, keyboard-first editing, and the same live preview and Mermaid rendering — one purchase for iPhone, iPad and Mac.

YOUR LIBRARY, ORGANIZED • Pinned notes, Last 7 Days, and Trash with restore • Full-text search across every note, with jump to match • In-document find and replace with match highlighting • Attach photos to notes; files stay ordinary Markdown

EXPORT AND SHARE • Export Markdown and plain text — free • Copy as rich text for mail and documents • PDF and HTML export with MDash Pro

MDASH PRO — ONE PURCHASE, EVERY DEVICE A single one-time purchase unlocks iCloud sync across your devices, PDF export, HTML export and watermark-free Mermaid diagrams. No subscription.

PRIVATE BY DESIGN Notes are stored on device; sync is optional and uses your iCloud. Mermaid rendering is local. There is no tracking and no account.

Questions or ideas? Leave a review or reach out through the App Store page — MDash is built by an independent developer and shaped by user feedback.