OpenMark

Now on iPhone & iPad — read beautifully rendered markdown anywhere.

OpenMark brings beautiful markdown rendering to your iPhone and iPad. Open any .md file from iCloud Drive, Files, or any file provider and see it rendered with full formatting — headings, code blocks, tables, math equations (KaTeX), diagrams (Mermaid), GitHub-style alerts, and interactive checklists.

Features:

• Full markdown rendering with syntax-highlighted code blocks
• KaTeX math equations — inline and display mode
• Mermaid diagrams rendered natively
• GitHub-style alerts (Note, Tip, Important, Warning, Caution)
• Interactive checkboxes — tap to toggle, changes save back to file
• Export to PDF or HTML, copy as markdown
• Outline sidebar on iPad for quick navigation
• Dark mode support
• 4 themes: Default, Nord, Solarized, One Dark
• Works offline — all rendering is bundled, no internet required
• Universal Purchase — buy once, get both Mac and iOS

Edit your markdown on Mac with the full OpenMark editor. Read anywhere on iPhone and iPad.