> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getduezen.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Payment tracking

> Two ways to mark a payment, how undo works, what gets stored in history, and how to read the sparkline on a bill's detail screen.

Every payment you record is stored with its date and amount, and appears in your history.

## Mark an item as paid

There are two ways to do it, and both record the same information.

<Tabs>
  <Tab title="Swipe">
    Swipe the bill card left. Fastest option for a list of items. See [Swipe gestures](/core/swipe-gestures).
  </Tab>

  <Tab title="Detail screen">
    Tap the card to open it, then tap **Mark as Paid**. Use this when you need to change the payment date or amount first.
  </Tab>
</Tabs>

The payment date defaults to today and is editable on the detail screen. For recurring bills, marking paid advances the due date to the next cycle automatically — the item stays in your list ready for the following period.

## Undo and payment history

Every payment action can be undone. When you mark something paid, a toast slides up with an **Undo** button. Tapping it removes the payment record and returns the item to its unpaid state.

All payments are stored in the **History** tab, organized by month. Each entry shows the item name, amount, date, and whether it was on time, late, or manually edited.

* The undo toast is available for 4 seconds after each payment action
* Filter history by status (paid, late, overdue) or time range
* Export everything as a CSV from **Settings → Export Data**

## Sparklines and streaks

Each bill's detail screen shows a **sparkline** — your last four payment dates plotted as dots on a timeline. It makes a habit visible: whether you tend to pay early, on time, or late.

| Dot color | Meaning        |
| --------- | -------------- |
| Green     | Paid on time   |
| Amber     | Paid late      |
| Red       | Paid very late |

A **streak badge** also appears on the detail screen once you have consecutive on-time payments. Streaks of 3, 6, 12, and 24 months are recognized with a celebration and logged to [Your Journey](/advanced/your-journey).

Each time you mark a payment, DueZen shows a short quote from a rotating set of more than 30 messages.