Kittysplit will help to manage group expenses and split them. This application does not request username and password login, will generate an unique web address and you can share it with your friend to see expenses and debts.
More useful to track successive expenses between same persons, for example when you are with the same friends in a trip.
You don’t need to write expenses and how much each of them must give back, easily manage it online and anyone can see their debts, add new ones and more.