I like to concept of the Receipt splitter, however I miss two functions.
I would suggest to add the option to assign items to other people. When I scan a receipt it is easier if I just assign the items instead of letting the others choose them self.
Of course it would be nice if they still can see the receipt and items assigned to double check.
Another function I miss is to manually add a tip (a percentage or a fixed amount) and then to split this as well.