Very useful, but... – Wunderlist: To-Do List & Tasks Review

We use this app for all kinds of lists and find it to be a great help. Still, when using a list like "Groceries" it needs a type-ahead feature. The stuff we buy is typically in the Completed To-Dos list. That list can't be sorted, or filtered and gets quite long. It would be most helpful to have a type-ahead feature when entering a new item that queries the completed items and offers a list of matching things. Then the user could simply uncheck them from completed and they are on the grocery list once more.
Review by Sorry4Me on Wunderlist: To-Do List & Tasks.