Best iPhone apps for AI users: the missing file slot

Most broad AI app lists recommend chatbots, notes, keyboards, scanners, and automation. Those categories matter, but they miss a fast-growing iPhone problem: AI tools now create real Markdown files that still need a readable local preview.

The practical 5-app AI iPhone stack

Keep the stack simple: one AI app for generation, Files or iCloud Drive for handoff, Mail, AirDrop, Slack, WhatsApp, or Telegram for transfer, Md Preview for local Markdown preview, and Html Preview when the same workflow produces HTML.

Md Preview is the Markdown preview slot

Md Preview is not trying to replace your chatbot, editor, notes app, or cloud drive. It fills the focused viewer slot: open .md, .markdown, .mdx, .rmd, .qmd from Files or the iOS Share Sheet and preview the file locally on iPhone or iPad.

Why AI users search for this now

ChatGPT, Claude, Gemini, Perplexity, Copilot, DeepSeek, Cursor, Codex, v0, and other AI tools can turn prompts into reports, artifacts, specs, notes, prototypes, saved pages, and technical drafts. On iPhone, those outputs often arrive as files, not normal app screens.

Selection criteria before installing

Prioritize apps that reduce the handoff: real .md, .markdown, .mdx, .rmd, .qmd support, Files compatibility, Share Sheet import, local preview, no forced account, no ad clutter, and a clear 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.