There are differences in function, not just in purpose.
Kid's Corner is more convenient to access. You enter Kid's Corner by swiping left from the lock screen. To switch back, don't swipe left at the lock screen. Apps Corner is accessed by pressing the Launch button in Settings > Apps Corner. You return to the regular profile by holding ...
Kids corner is a special area where you can have your kids access only the shops they you want them to have. It is always accessible. The rest of the phone is behind a pin.
App corner is a special area where you can have only a certain set of apps visible. You activate this mode manually. It can only be deactivated by a specific key press. It is meant to ...
It seems like the settings app is not able to detect the pin status of the apps corner application.. Windows 10 mobile is still not as stable as it should be and there is nothing much we can do for a OS setting app except trying these..
(If you haven't already) :
Restarting the device. A simple restart fixes multiple issues like background task memory usage ...
This article explains how to do it:
Here's how to set up Apps Corner:
Swipe down from the top of the screen and tap 'All settings.'
Scroll down and tap apps corner.
Tap 'Apps' and select the apps that you want people to use. Tap 'Done' when you're happy with your selection.
If your phone doesn't already ...