Daily Bread is a grocery list that gets to know you.
It integrates with the built-in Reminders app, which is pretty awesome:
Oh, and it supports the Apple Watch.
In fact, it's the best grocery list you can buy for your Apple Watch.
Really! The reviews say so:
“Great for Apple Watch grocery shopping” ★★★★★ There is no reminders app for the Apple Watch, so if you want to check off items from my shopping list from your watch, this is the best implementation I have seen.
Making a grocery list should be quick and easy, and now it is.