A desktop app for exams where extensions cannot run: Respondus LockDown Browser, ExamSoft, Safe Exam Browser, Proctorio, and Honorlock. The answer overlay is excluded from screen capture, recording, and sharing, so proctoring software does not see it.
Download for WindowsOne-click installer · Windows 10 (build 19041) or newer, 64-bit
Download portable versionNo installation. Runs straight from a folder or USB drive.
Download for Mac (Apple Silicon)M1/M2/M3/M4 Macs · Intel Mac version
Do this before your exam, not during it
Run the installer, or the portable file if you cannot install software on your machine. The app is called System Service Host so it blends into your task list.
Launch Cheatly before you open your lockdown browser. Most lockdown browsers scan running apps only at launch.
On any question, press Ctrl+Shift+A. Cheatly reads your screen and shows the answer in an overlay only you can see.
Press Ctrl+Shift+E to make the overlay disappear at once, or Ctrl+Shift+H to toggle it.
Everything runs from the keyboard
Capture the screen and get the answer.
Type the last answer into the focused field.
Show or hide the overlay.
Emergency hide, instantly.
On macOS the shortcuts use Cmd instead of Ctrl, and the app needs Screen Recording and Accessibility permissions on first launch (System Settings → Privacy & Security).