Detect which app / process has got focus

Targets macOS
1

Hi,
is there any way on Mac OS to detect which application or process currently has got the focus?
I didn’t get any results from google.
Thank you!

2

AppleScript seems able to do so, but this may be off limit in the MAS.
https://apple.stackexchange.com/questions/293087/detect-application-focus-event-using-applescript

3

The way this used to be done was using NSWorkspace but I’m not sure anything like this would fly on the Mac App Store anymore.

I agree with @Michel Bujardet , lots of things that used to be okay are no longer acceptable in this security and privacy-conscious age. AppleScript used to have free rein over the OS and running apps but I wouldn’t be planning a new app around it these days.

4

I don’t know the MAS implications of this, but IF you enable some macOS Accessibility settings you can glean a bunch of information from AccessibilityMBS . At the bottom of that page are links to some sample code which may help determine if suitable.

However, I think it does require a user to have Accessibility enabled, and I don’t know the implications for MAS or similar.