I use AnyList. (Review here.) Free, available for Mac/iOS/Android, and there’s an inexpensive subscription to use with (a) the Mac app and/or (b) have editable lists among family members.
It also has browser extensions for major browsers that imports recipes and then creates or adds to shopping lists, with items sent to the correct areas (eg Dairy, Frozen Foods, Condiments), and you can import recipes from web pages or emails and it will ingest the ingredients and put them on a shopping list for you.
I wrote about it (and included screenshots for the iOS and Mac apps) here and here.