The broad AI app list misses the file problem

Lists of the best iPhone apps for AI users usually focus on chatbots, note apps, keyboards, scanners, or automation. Those are useful, but they miss a fast-growing handoff: AI tools create real Markdown files that still need to be opened on iPhone.

Md Preview is the Markdown file viewer slot

Md Preview fills the viewer slot in that stack. It does not replace ChatGPT, Claude, Gemini, Cursor, Codex, Files, Mail, or cloud storage. It gives .md, .markdown, .mdx, .rmd, .qmd a reliable local preview path on iPhone and iPad.

Best iPhone app stack for AI-generated files

Keep the setup small: one AI app to generate the output, Files or iCloud Drive to store it, Mail, AirDrop, Slack, WhatsApp, or Telegram to transfer it, and Md Preview to read the rendered Markdown file locally.

Why this page is not a generic app directory

The goal is not to name every popular AI app. The goal is to solve the moment after the AI app has created a file. If the output is Markdown, the best next app is the one that opens the file immediately.

Install criteria before choosing

Prioritize real .md, .markdown, .mdx, .rmd, .qmd support, Share Sheet import, Files compatibility, local preview, readable rendering, no ad clutter, and a direct App Store path. Md Preview has no subscriptions, no in-app purchases, and no ads.

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.