Download Copperas

Free to download. The writing environment requires no account.
AI features require a subscription.

macOS · Apple Silicon
Mac
Apple Silicon

For Macs with M1, M2, M3, or M4 chips. Most Macs made after 2020.

Download .dmg
arm64 · macOS 12 Monterey or later
macOS · Intel
Mac
Intel

For Macs with Intel Core processors. Macs made before 2021.

Download .dmg
x64 · macOS 12 Monterey or later
Windows
Windows
 

Windows 10 and Windows 11, 64-bit.

Coming soon
x64 installer

Not sure which version? Open the Apple menu → About This Mac. If it says Apple M-series chip, choose Apple Silicon. If it says Intel Core, choose Intel.

App interface available in English and Spanish · French and German coming soon

What's included
in local mode.

No account required. No time limit. Everything below works offline and costs nothing.

Editor
Full WYSIWYG Markdown editor with typewriter mode, focus mode, and autosave.
Version Timeline
Automatic snapshots before every change. Compare and restore any version.
Chapter Navigator
Navigate your manuscript by chapter, part, and scene. Live word counts throughout.
DOCX Import & Export
Import from Word. Export a clean, submission-ready document at any time.
Six Themes
Handcrafted light and dark themes for the mood that fits the way you work.
External Editors
Your manuscript is a plain Markdown file. Open it in any text editor, any time.