Plates by Splitwise is a nifty iPhone app that lets you quickly & easily split the bill whenever you’re at a restaurant. Everytime you eat out with your friends or colleagues, Plates lets you quickly calculate exactly how much each ones needs to contribute towards the bill.
There are other similar apps on the App Store, but I really like the way Plates visualizes the plates on a table. Using the app is as simple as it gets. First, specify how many people are at the table. Next, enter the bill sub-total (before tip & tax), then enter the Tax. Plates gives you the option of either splitting the bill equally with everyone present at the table or enter the items on the bill and assign it to someone by dragging the item to their plate. At the end, Plates gives you a nice summary of the amounts entered and what each friend has to contribute.
The simplicity that Plates sports is its biggest trait and it really works great. It is available for Free on the App Store.