iA Writer Quattro
iA · A writing typeface from iA, installed as six static and variable font files for use as custom fonts.
iA Writer Quattro is a font you can install on a Mac.
About
iA Writer Quattro is a writing typeface from iA. This Homebrew cask installs six font files—not an application: four static styles (regular, italic, bold, and bold italic), plus a variable font and its italic counterpart. The project describes the iA Writer fonts as modified versions of IBM Plex.
After installation, select the installed iA Writer Quattro font in a compatible application’s font settings to use it. The project permits installing the fonts as custom fonts for personal use in other text editors. It does not approve bundling them in other text editors or distributing them with those editors; consult the project’s license file for usage and distribution terms.
Install with brew install --cask font-ia-writer-quattro. This installs the font files; it does not install iA Writer or another editor.
Sources: iA-Fonts project · Usage guidelines and font background
Version changes: Unknown.
New What’s new in latest From Homebrew commits
This release has no separate notes.
Install and uninstall
Homebrew installs the font in ~/Library/Fonts, where Font Book can use it.
Install without Homebrew
Download the same file Homebrew uses: github.com/iaolo/iA-Fonts/archive/refs/heads/master.tar.gz
$ brew uninstall --cask \font-ia-writer-quattroA regular uninstall removes the app and keeps its settings and caches.
Questions
Is iA Writer Quattro safe?
iA Writer Quattro is in Homebrew’s official catalog and has not been disabled. Since September 2026, Homebrew disables apps that fail macOS Gatekeeper checks. The download comes from github.com; Homebrew does not verify a checksum for it. It was installed 32 times through Homebrew in the last 30 days.
How do I completely uninstall iA Writer Quattro on a Mac?
Run brew uninstall --cask font-ia-writer-quattro.