try Google keep. there's a shortcut you can make that with a single tap from the homescreen creates a new note and brings up your keyboard for typing. after you're done you don't have to even click save to persist it. it also auto syncs in the background.
And you can invite others to share a note and edit it together in real time. My family uses this feature for shopping lists. Any of us can add things to the list and when one of us does some shopping they just trick the items off.
I've been using it on iOS for years