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Imagine that Sally has just opened up the PennyPincher website...
FIGURE 1
Figure 1 displays the home screen of the application for Sally Smith. In this screen, she can see a list of all of the people she has a PennyPincher connection with. Each row itself is a link to a screen displaying all debts for that particular person (Figure 2). On each row, three main user interface devices are shown. On the very left, there is a checkbox used for selecting the user when Sally wants to delete a connection with that particular user. To the right, there is, on some rows, a button with a label representing the number of disputes that particular user has with Sally. Next to the disputes button, there is a convenient "add" button that will bring Sally to the pop-up add screen (Figure 3). On the very right, there is a value of how much money that Sally owes or is owed by that particular person. (Negative sign (-) means Sally owes the person, and positive sign (+) means that the person owes Sally).
Imagine that Sally has pressed the row with "Roommate #1"
FIGURE 2
Figure 2 displays a screen displaying all of the debts between Sally and Roommate #1. The layout of Figure 2 is consistent with Figure 1, with the difference being listing debts instead of people. Just like before, checkboxes are on the very left of each row to perform row selection for the "delete", "nudge", and "dispute" functions located at the bottom of the screen. On the right side of some debts, there is a dispute flag, indicating a dispute on the debt. On the right side, the amount of debt is once again shown, using the same (+/-) system to indicate the direction of the debt.
Imagine that Sally presses the Add button on the bottom left of Figure 2.
FIGURE 3
Figure 3 displays the add debt pop-up screen. The idea behind that idea of an add "pop-up" is that users can add a transaction from home page (Figure 1) as well as a user's page (Figure 2). This duplication may seem ineffective, but since "add" is such a commonly used function, users would appreciate not having to go back to a certain screen to "add." The add pop-up itself is pretty simple, with three main fields: name, date, and amount. The user can simply click on the field to bring up a suitable keyboard (on touchscreen phones) or simply click the field to gain focus to type. At the bottom, there is a simple add button to submit the debt. After this is done, the pop-up simply disappears.
Imagine that Sally is on Figure 2 (the page displaying all of Roommate 1's mutual debts), selects two items (checkboxes on the left are checked), and presses the dispute button on the bottom right corner. This would send a dispute in the system to Roommate 1.
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FIGURE 4
FIGURE 5
FIGURE 6
So now, imagine that you are Roommate 1 and you are looking at the Penny Pincher application. On your home screen (Figure 4), you see that Sally Smith has disputed 2 items based on the red button next to her name. You can simply tap that button which will bring you to Figure 5. On this page, you see the items that Sally has disputed. Here, you have the option of settling the dispute (button at the bottom). This will lead to Figure 6.
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