Read the Markdown and HTML you actually deal with.

Specs, CLAUDE.md, READMEs, AI-exported reports — opened straight from a chat app, rendered properly on your phone.

Get it on the App Store See what it does

One tap from a chat app

The file lands. You read it.

When a teammate or your AI agent sends a .md or .html in WeChat, Telegram, or Feishu, just choose Open in VibeMark. No saving, hunting, or switching apps.

Opening a Markdown file in VibeMark from a chat app

Renders what others get wrong

Tables, math, diagrams, code.

GitHub-flavored tables, LaTeX math, Mermaid diagrams, and syntax-highlighted code — the things plain viewers and chat apps butcher.

VibeMark rendering math, a Mermaid diagram, and highlighted code

Private by default

Read locally. Nothing phones home.

Everything renders on-device and offline. Remote content is blocked until you allow it per document. No accounts, no tracking, no ads. Read the privacy policy →

A clean HTML document rendered in VibeMark

Everything in v1

A real reader, not a viewer.

Open from anywhere

Share-sheet / “Open in” from WeChat, Telegram, Feishu, Mail, and Files. Plus a document picker and paste-text.

GFM & more

Tables, task lists, strikethrough, autolinks. .md .markdown .html .txt.

Math & diagrams

KaTeX math and Mermaid diagrams render inline — offline, bundled, no CDN.

Library & search

Everything you’ve opened, most-recent first, with title/filename search.

Themes & resume

Light, dark, and sepia; adjustable text size; pick up where you left off.

Export & Shortcuts

Export any document as an image to share, and drive it from Shortcuts.

Get VibeMark

Universal app for iPhone and iPad. iOS 17 or later. Free.

Download on the App Store

Link goes live once the app is approved.