KNTF aka Kustom Notification

It's KWGT but instead of a Widget it's a Notification. (Would that be possible to realize?)

Custom notification is available in 3.37

I am using kwgts custom notification... I exported it then sent it to other phone but when I try to import it says it needs to be a kwgt... but the file exported as an kntf.... should I just rename to kwgt or is there another way?