Its not perfect. But I cant think of any faults it has. There was a couple weeks where I downloaded every list app I could get my hands on.
This one beat them all. Its easy to use, works as expected, and has unexpected "oh!" moments. Best list app, by a mile. I use it for dinner planning (and the filtering is awesome. I label the foods, so I can find something I want to cook immediately), keeping track of potential kid activities by day, grocery shopping, and to keep track of what I need to do around the house.
Awesome stuff.
Byran about AnyList: Grocery Shopping List