Lezin

Lezin is a focused Markdown editor for people who want portable documents, native apps, and no subscription. One Purchase, Full App — Buy Lezin once and use the included features across iPhone, iPad, and Mac through the universal App Store purchase. Plain Markdown Files — Write directly in Markdown. Your documents stay normal files you can open, move, back up, and edit elsewhere. Rendered Preview and Split View — Switch to local rendered preview, or use split source/preview workflows on larger iPad layouts. Files-Friendly Documents — Create new Markdown files, open existing documents from Files, save changes, and keep recent work easy to reopen. Themes, CSS, and Layout — Choose built-in themes, set app and preview color modes, add custom preview CSS, and cap readable widths on larger screens. Optional AI-Assisted Editing — Configure your own OpenAI API key and model, then improve, fix, summarize, or continue drafts when you choose. Images and Export — Insert photos into Markdown, share as Markdown or plain text, export clean PDFs with paper options, or package Markdown and local assets as a ZIP. Offline First — Normal editing and preview rendering use bundled local resources and work without network access.