Here’s the scenario: Ron, Ben, and Bess are going out for lunch. Bess is a heavy eater; Ben is a light eater, and he has a coupon for the restaurant. They agree to treat the bill as separate checks, computing the individual shares with You owe...

The waiter’s happy (he doesn’t have the hassle of creating three separate checks), Ben and Ron are happy because they won’t be subsidizing Bess, and Bess is not quite so happy, since she thought she’d be getting off light. But they have a good lunch, and the check gets presented.

Ron enters the tax and tip. He then touches the People tab, which takes him to the next screen
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where he touches “Choose existing list”.
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There are two lists that have been saved from previous outings, one when our intrepid trio was joined by Fred and Pauline. Rather than re-entering a third list, Ron just removes Fred and Pauline from this one by swiping across each name and touching the resulting Delete button. He can save the resultant three person list if he wants to, and then simply presses “Choose” .
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On the main screen (not shown here), Ron touches the “Items” tab and is taken to this screen where he enters each of the items from the check. Here, he’s entering an amount of $12.50. He’s entered the 12, and can now just touch the .50 key, or the . key, the 5 key, the 0 key, and the return key.
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Here’s an amount, $15.50, assigned to Ben. Notice the little check mark next to his name. If Ron really meant to assign it to Bess, he could touch Ben’s name again, and the checkmark would disappear, and he could then touch Bess (’s name).

Note the little lock symbol on the amount. This means that the amount cannot be changed. The program does that because it was too easy to enter a new item without pressing “Another”. You can change the amount - you just have to go back to the Items screen and edit that particular item.

Obviously, Ron enters each item, pressing “Another” after each item until they’re all entered, when he presses the “Back” button.
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Here’s a bottle of (cheap) wine split between Ron and Bess. Ben abstained that day. Notice that Ron and Bess each have a share of 1 (one). They’re splitting the cost of the wine evenly. If Bess had more glasses than Ron did, Ron could increase her share to 2 (or 3), and the $16.49 would be split accordingly.
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After all the items have been entered, and they total correctly, the Items tab shows the “Who owes what?” button. Note the coupon which is shared by Ron and Ben.

On this screen, touching an item will take you to the “An item” screen seen above, to let you make changes to the amount or the assignment, or the type of item (Normal, Discount, etc.)

If you need to add an item, simply press the “+” button.
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And here is who owes what, the longed for separate check. It was probably right for them to not split the check evenly; Ben would surely resent having to pay for Bess’ share, since she ordered twice as much. It didn’t help (the check or their relationship) that Ben shared his coupon with Ron, but not Bess.

Want to see details of what was in the $20.18 that Ron owes? He always does. Tap the blue arrow on his line, and...
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here’s what went into Ron’s $20.18. An entree, half a bottle of wine, a coupon, tax, and tip.

If anyone wanted an email record, touching the little envelope icon on the main screen would bring up
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this screen, where you can send the record to any or all participants, or the accounting department, or the IRS.

And that’s it. Separate checks. As easy as it gets, short of having the waiter do it. And he’d not be happy splitting the bottle of wine and the coupon.