I started using AnyList and I generally maintain my weekly grocery list in the webapp and it syncs to the phone and the watch. It is nice once set up, but kinda clunky on the fly. It does add to current list nicely, but that assumes you have a list set up. There is a $10/y sub.

I have not played with the Reminders app for grocery lists, but I believe it can now easily perform that task in spades with the lates update. Will probably try it when my sub for AnyList runs out. At least worth the look before paying for an app/sub. Especially since it is an included app anyway and works across all devices.

My vote is for the native Reminders app, the updates in ios17 are awesome especially for grocery lists. If you set the list to hide completed items your watch will only show current items and as you check them off they are hidden.

Here’s something I do with my grocery reminder list. I put all my regular grocery stores on the list as a location-based reminder and then minimize them, so whenever I get to any of those grocery stores, the list automatically pops up.

https://imgur.com/a/OtXSlI7

And I just have to say to Siri “add potato chips to the walmart list”. You don’t have to say the entire list name.

Microsoft to do is pretty decent

Reminders - you don’t need any other app. Raise wrist and tell Siri to add something to your grocery list.