Download
Try Pro Writer OS free for 14 days.
Full editing from the first minute. No card, no account, nothing to sign up for.
Windows 10/11 (64-bit) · macOS 11+ (Apple Silicon or Intel) · Works fully offline.
Not sure which Mac you have? Apple menu (top-left) → About This Mac shows your chip.
Getting started
01
Install
Windows: run the installer — it adds a desktop and Start menu shortcut. Mac: open the .dmg and drag Pro Writer OS into Applications.
02
Start a story
Name a project and choose Screenplay, Novel or Game. A short guided tour shows you around, or skip it and dive in.
03
Keep it
Enjoy 14 days of full editing. When you’re ready, buy a licence and paste in your key. Your work carries straight over.
Good to know
Windows says it doesn’t recognise the app
Pro Writer OS is new, so Windows SmartScreen may show a warning the first time. Choose More info, then Run anyway.
Where are my projects saved?
In a folder you choose, as plain files on your own computer. Change it any time with Projects Folder on the start screen.
What happens after 14 days?
Every project stays open to read and export. Buy a licence whenever you’re ready to keep writing.
Is there a Mac version?
Yes — Pro Writer OS now runs on macOS 11 or later, for both Apple Silicon and Intel Macs. The first time you open it, macOS may show an “unidentified developer” warning since the app isn’t notarised yet — right-click (or Control-click) the app and choose Open, then confirm, to get past it.