Not great for US stores. Way too slow
For those looking for kidney stone reducing diet help, this at least is a start. It is overly weighted to various teas, which wastes screen space. You can scroll thru Low, Medium or High oxalate lists but it is tedious and contains alot of things you don't want taking up screen space. Also, it is not in total agreement with other diets as to what food goes in what grouping.
You can type in the food and search, but there is a strange bug such that the first letter sticks on the screen for 5 seconds, making it hard to type the rest of the name. The list is mostly of actual basic foods. ie. pizza not on it, tomato is on it. you basicly have type in ingredients not the end product.
This is the only oxalate list in the app store, so it's this or nothing. I do use it, BUT I found a good list on the net, shrunk down the font, printed it, and put it in my wallet.