Beauty Maximus is a free, on‑device Markdown editor for Mac, iOS, and web, offering secure, offline note‑taking with no accounts or telemetry. It supports the full Markdown dialect, including tables, formulas, footnotes, and diagrams, and can export to PDF, HTML, or ZIP. Rich‑text formatting works with familiar shortcuts (⌘B, ⌘I, ⌘K) while preserving plain text underneath.

The editor includes multiplayer collaboration via peer‑to‑peer links, allowing real‑time editing without a central server, and offers extensive text replacements for symbols and emojis. Cloud sync across iPhone, Mac, and iPad leverages Apple’s iCloud Drive, keeping notes and images in sync without extra services. Key features emphasize privacy, simplicity, and a seamless writing experience on any device.