I actually use this, really

I like this app. I use it all of the time to make grocery lists on the fly. You can also use it to keep track of how much everything costs and giving you the total. You can also archive old lists and favorite items that you buy frequently. There are other good grocery apps that I have used but this one is the most simple and therefore, closest to a good ol fashioned paper and pen shopping list experience. :)

Anonyface about Shared Grocery List - Listonic, v2.4.16