I'm looking for a free todo list app (iPhone and android) that would allow sharing my daily todo lists with a friend. I don't want this friend to be assigned to do anything, so I don't want them to be able to check mark or edit my lists. I only want them to see my list. The same way, I want them to share their lists with me, such that I can only see their list without being able to edit them.
I have tried several apps, including Wunderlist, Remember The Milk, Any.Do, etc. and none seem to have this feature. They all allow sharing your lists, and once the list is shared, the other person can edit that list.
I'd also be very keen on something with not too many features; just a simple app with this feature on top of everything else that it can offer. Any help?