Key Modifier 0.0.2
Install (recommended)
Download KeyModifier-*.dmg, open it, and drag Key Modifier.app to the Applications folder.
Alternative
Download KeyModifier-*.zip, unzip, and move Key Modifier.app to /Applications.
First launch
This build is ad-hoc signed (not notarized). On first launch macOS may
block it. To allow it, run once in Terminal:
xattr -dr com.apple.quarantine "/Applications/Key Modifier.app"Then open the app and grant Accessibility permission when prompted
(System Settings → Privacy & Security → Accessibility).