I'm having an extremely difficult finding a simple app to create different lists and check them off as they're done. I need it to be cloud or web based so I can pull up on multiple devices and on my Mac. This could be used for holiday gift lists as well, which would be an easy way to explain what I'm looking for. You'd create a list for each person, with the items. You can check off the item as it's done/bought, but you can choose to hide it once checked or still see it. But then most importantly, I need a consolidated list of all my lists showing what I still need to do and what list it belongs to, and again, I can choose to see or hide the completed ones. I don't even care about reminders or due dates or anything like that which would make it more complex. This seems pretty simple. Any ideas?