Same feature set as Splitwise, but without annoying monthly costs! And it is really beautiful, fun to use, recommended!!
Tricount - Manage and share expenses with friends
Kittysplit - The easiest way of sharing costs with a group of friends
Splid - Splid helps friends manage their money.
ihatemoney - Manage your shared expenses, easily
Settle Up - SETTLE UP is an indispensable app for friends and flatmates who need to keep track of shared bills...
SplittyPie - Create event, add users and their expenses.