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

# Attribution Settings

> Choose between Meta Pixel and Cometly for conversion attribution across AdStellar.

Attribution determines how conversions are tracked and reported. AdStellar supports two attribution sources, and your choice affects metrics across multiple features.

## Attribution Sources

### Meta Pixel (Default)

Meta's built-in attribution uses the Meta Pixel and Conversions API to track conversions. This is the default source and requires no additional setup beyond having a Pixel installed on your website.

### Cometly

Cometly provides **first-party attribution** as an alternative to Meta's tracking. It uses server-side tracking to attribute conversions directly, often providing more accurate data — especially for iOS 14.5+ traffic where Meta's attribution may underreport.

<Note>
  Cometly integration requires a separate Cometly account. Connect it from **Settings > Integrations**.
</Note>

## Configuring Attribution

<Steps>
  <Step title="Open Integrations">
    Navigate to **Settings > Integrations**.
  </Step>

  <Step title="Select your attribution source">
    Under the Attribution section, choose **Meta Pixel** or **Cometly** as your primary attribution source.
  </Step>

  <Step title="Save">
    Click **Save**. The change takes effect immediately across all features that display conversion data.
  </Step>
</Steps>

## Where Attribution Applies

Your attribution source selection affects conversion-related metrics in these features:

| Feature                   | What changes                                                                     |
| ------------------------- | -------------------------------------------------------------------------------- |
| **AI Insights**           | Ad rankings are based on conversion data from the selected source                |
| **Proven Winners**        | Top-performing ads are ranked by the selected attribution                        |
| **AI Combos**             | Recommended creative/audience combinations use the selected conversion data      |
| **Performance Dashboard** | Results, Conversion Value, Cost per Result, and ROAS reflect the selected source |

### Attribution Toggle

On pages that display conversion data — AI Insights, Proven Winners, AI Combos, and the Performance Dashboard — an attribution toggle lets you switch between Meta and Cometly views without changing your default setting. This is useful for comparing how each source reports the same data.

## Attribution Windows

During the [campaign launch flow](/guides/launch/overview), you can configure the **attribution window** for each campaign. This determines how long after a click or view a conversion is attributed to an ad.

Common windows:

* **1-day click** — conversions within 1 day of clicking the ad
* **7-day click** — conversions within 7 days of clicking the ad
* **1-day click, 1-day view** — includes both click and view-through conversions within 1 day

<Tip>
  If you're comparing Meta and Cometly data, keep in mind that they may use different attribution windows by default. Align the windows for an apples-to-apples comparison.
</Tip>