I'm frustrated by all the freemium apps and want to release something completely free for full recipe/shopping management. To me, that's baseline functionality.
The main difference in your description is that the shopping list can be auto generated by selected recipes planned against a calendar. e.g. I want to cook these 5 recipes this week and my shopping list automatically aggregates to say "3 onions" instead of 3 separate entries for onions. I don't have a "pantry" yet but can very easily see that in the future.