OnePreview vs SoloMD

Open Markdown and developer files in OnePreview on iPhone and iPad. OnePreview renders GitHub-style Markdown, MDX, TextBundle and TextPack packages, JSON, JSONL, YAML, XML, CSV, TSV, TOML, ENV, SQLite databases, source code, plain text, logs, and ZIP and TAR.GZ archives. In Files, long-press a supported document, choose Open With, then select OnePreview. A normal tap may use Apple's built-in preview for common file types. Inside OnePreview, switch between rendered Markdown and source, view Mermaid diagrams and KaTeX math with bundled assets, inspect structured data and SQLite schemas, and check archive contents before extracting. Built for developer workflows, AI-generated files, documentation review, and everyday file browsing. Processing is fast, local-first, and does not require an account.

SoloMD is a lightweight, distraction-free Markdown editor for iPad. One file. One window. Just write. Built from the ground up as a focused writing tool - no account, no cloud, no telemetry, no subscription. Your notes stay in plain .md and .txt files on your iPad, readable by any editor on any platform, today and in ten years. CORE EDITING - Live preview - Markdown symbols fade out after the cursor leaves the line. - Rich syntax styling - real big headings, real bold, real monospace for code. - Light and Dark themes that follow iPad system appearance. - Multi-encoding - auto-detects UTF-8, UTF-16, GBK, Big5. - Tabs with dirty indicators. - File tree sidebar, outline view, and global search. MARKDOWN POWER - KaTeX math - inline and block math render instantly. - Mermaid diagrams - flowcharts, sequence diagrams, Gantt charts. - Task lists with clickable checkboxes. - Footnotes, YAML front-matter, text highlighting. - Syntax highlighting for 13 plus languages. - Synced split-pane scroll. - Tap an image or Mermaid diagram to open a pinch-zoomable overlay. BUILT FOR IPAD - 44 pt touch targets across toolbar, outline, and file tree. - Larger default font sizes tuned for iPad screen distance. - Split-view and multitasking friendly. - Works with hardware keyboards. - Portrait and landscape, every orientation. WRITER TOOLS - Focus mode - non-current paragraphs dim for deep work. - Typewriter mode. - Session restore - auto-saves so you never lose a line. - Chinese power tools - simplified/traditional conversion, pinyin, CJK word counts. - Spell check. - Custom CSS. EXPORT - HTML (newsletter quality) - PDF with KaTeX and Mermaid baked in - Word (.docx) with tables preserved - Copy as HTML, plain text, or Markdown PRIVACY FIRST SoloMD collects no personal data. No account. No analytics. No ads. No tracking. All your notes live locally in files you own. SoloMD is open source (MIT). Source: github.com/zhitongblog/solomd