Mac
Open the zip. Drag to Applications.
The first time, right-click Authentic and choose Open, then Open again. macOS asks once because the app isn’t notarized yet.
Authentic for Mac and Windows
Offline.
On your desk.
The same detector as the website, running on your computer. Drop a whole stack of assignments. Nothing is uploaded.
Download for MacmacOS 11+ · Apple silicon and Intel · 3.9 MB
Download for WindowsWindows 10 and 11 · 64-bit · 1.9 MB
Version 1.0.0 · Model 2026.10-v3 · Free during beta
Install in a minute.
Windows
Run the installer. No admin needed.
If SmartScreen appears, choose More info then Run anyway. Authentic installs for your user and adds Start menu and desktop shortcuts.
Batch
Many files at once.
Drop a stack of essays. Each gets its own report in the library.
Private
Nothing leaves your computer.
No account, no upload, no internet needed after download.
Same engine
28,602 documents of training.
Identical model and calibrated ranges as the website.