Fair Share demo- Tip calculator and bill splitter for iPhone

[mobilemindchina]

Group mode is very clever, but it feels too complicated to do at dinner.

[jmkao]

It also contains a feature-filled bill splitter that has modes to handle both additive cases (where you want to precisely identify each line item with a person by default, except for a few shared exceptions) and subtractive cases (where you want to split the bill evenly across all people by default, except for a few individual exceptions).