Fantastic

The uneven split function works great. It takes a little time to set up each person with each event, but with vacation expenses where you have a show or two, several dinners and transportation, in the end it is a breeze to settle up. First, create an event. Then choose who attended, edit that person and calculate the % of the check that was theirs. Choose who paid, then include all the people who attended and it allocates the cost based on the percentages saved. For the next event, youll have to edit each person again, but it doesnt affect the first one you saved. When the people pay each other, you can check them off as paid.

Greykitty1998 about Share-a-bill, v2.2