Apps and stored data

Yes.

Large apps like Microsoft office suite, Adobe software series, they often have app data stored at somewhere else, rather than app folder.

 

~/Library/Application Support/ You can get to that via Go > Go to Folder since the user Library folder is hidden is hidden.

Note that's not the same as the Macintosh HD system Library folder.

 

Why not tell us which app(s) you are interested/concerned about, you might get better answers and help?

 

Could be in Caches and Preferences too. The other folder is Frameworks, but that might not be the case here. Getting that all from the Apple Developer documentation on File System Basics: https://developer.apple.com/library...de/FileSystemOverview/FileSystemOverview.html

Is it an app you got from the Mac App Store?

 

Only Kronos I see seems to be cloud based, so, nothing to uninstall and would not keep any data around other than possibly browser cache. Clear cache and cookies using the browser of choice's toolbar/preferences.

Can go rooting around filesystem for guessing, things named beginning with com.kronos or Kronos or kronos. But would warn against: unless know what is being deleted can be deleted and or have a backup that can restore from (if wrong thing deleted by mistake), just not worth it.

Nuclear option: boot into rcovery, wipe the OS partition, re-install OS. Again, need a backup to restore personal data from, and might need to re-install apps (read: anything that does not have simple drag and drop install process [eg. Office, Parallels/VMware/VirtualBox, Flash, Java]).