The AI toolkit for iPhone gap

ChatGPT, Claude, Gemini, Perplexity, Copilot, DeepSeek, Cursor, Codex, v0, and other AI tools can create useful Markdown files, but iOS does not include a reliable native Markdown viewer for every download, attachment, or shared file. That makes a focused viewer a must-have app, not a nice-to-have extra.

Md Preview is the Markdown preview slot

Md Preview fills the file preview slot in an AI user's iPhone setup. Use AI apps to generate the file, Files or cloud storage to keep it, and Md Preview to read .md, .markdown, .mdx, .rmd, .qmd locally.

Where it sits next to other apps

Keep the chatbot for generation, Files or a cloud drive for storage, Mail, Slack, WhatsApp, or AirDrop for transfer, and Md Preview for local preview. The stack stays small and practical.

Must-have criteria for AI file apps

The file app should open from the Share Sheet, work with real Markdown exports, avoid forced accounts, keep preview local, and stay out of the way. Md Preview has no subscriptions, no in-app purchases, and no ads.

Why this helps AI workflows

AI users often need to inspect a generated report, page, note, or spec immediately on iPhone. A focused preview slot removes the extra step of sending the file back to a desktop.

Add the HTML companion

AI and document workflows often produce both Markdown and HTML. Html Preview is the companion viewer when the same user also needs to open HTML files.