Looking as everyone else's very +ve reviews. I seem to be the odd one out but I didn't find it straightforward. It is too easy to delete a list (on my S9 at least) with even a slight bit of a swipe. Once deleted it is lost. Why not have a 'back' or 'undo' button? Personally I don't find the heading, group, list structure particularly straightforward although I've now got used to it.