Acidity vs Quill Markdown Editor

Acidity is a Safari extension for navigating to archived versions of pages. Quickly access page archives through a button in the toolbar. Specify regex matches to automatically redirect certain sites to archives.

Quill is a native Markdown editor that shows you the finished page while you write. As you type, the syntax markers fade away and your text renders in place — headings, bold, lists, tables, math, and diagrams — so your document reads like a clean article instead of a wall of asterisks and hashes. The markers reappear the moment your cursor lands on them, and the file underneath is always plain .md. Nothing proprietary, nothing locked in. Just a focused, native writing space on iPhone and iPad. WRITE THE WAY IT SHOULD FEEL • Live WYSIWYG rendering with syntax that hides as you type • Full Markdown + GFM: headings, bold, italic, strikethrough, code, task lists, tables, blockquotes • Inline and block LaTeX math, rendered beautifully with KaTeX • Live Mermaid diagrams — flowcharts and sequence diagrams draw themselves from a fenced code block • A live outline to jump around long documents • Auto-paired brackets and quotes, a formatting bar, and a one-tap View Source toggle • Focus Mode and Typewriter Mode to keep your place MAKE IT YOURS • Beautiful built-in themes • Your theme carries through to preview and export PREVIEW & EXPORT • Live Preview renders your document exactly as it will look • Export to HTML, print-ready PDF, Microsoft Word (.docx), and valid EPUB 3, with a table of contents and your theme baked in • Copy as Rich Text to paste formatted content into Mail, Notes, or anywhere DO MORE • On-device Apple Intelligence: summarize a document, rewrite a selection in the tone you choose, or suggest a title — nothing leaves your device • Speed Read flashes one word at a time at up to 900 WPM, skipping code and math automatically ONE APP, EVERY DEVICE Quill is a Universal app for iPhone, iPad, and Mac. Start a note on one device and pick it up on another — and a single purchase unlocks Pro on all of them. PRICING Quill is free to download with a 14-day full-featured trial. Basic Markdown editing stays free forever. Unlock Pro once to keep export, Live Preview, Speed Read, and Apple Intelligence — a one-time purchase, no subscription, covering iPhone, iPad, and Mac. Your words stay yours: plain Markdown files, on your device.