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

# Blended App Installs: Cross-Platform Mobile Downloads

> Track total mobile app installs attributed to your ads across Meta, Google, and TikTok. Measure app acquisition performance.

<Tip>
  Blended App Installs measures the total number of mobile app downloads attributed to your advertising across all connected platforms.
</Tip>

## Formula

<Info>
  **Blended App Installs** = **SUM** ( App Install Events ) **ACROSS** All Channels
</Info>

### Formula Components

| Metric                                                                                                  | Definition                                      |
| ------------------------------------------------------------------------------------------------------- | ----------------------------------------------- |
| [**Meta App Installs**](/reference/metrics/advertising/meta/meta-conversions/meta-app-installs)         | App installs attributed to Meta Ads campaigns   |
| [**Google App Installs**](/reference/metrics/advertising/google/google-conversions/google-app-installs) | App installs attributed to Google Ads campaigns |
| [**TikTok App Installs**](/reference/metrics/advertising/tiktok/tiktok-conversions/tiktok-app-installs) | App installs attributed to TikTok Ads campaigns |

| Metadata        |                                                                                                     |
| --------------- | --------------------------------------------------------------------------------------------------- |
| **Type**        | Number                                                                                              |
| **Data Source** | [Meta Ads](/sources/facebook-ads), [Google Ads](/sources/google-ads), [TikTok Ads](/sources/tiktok) |
| **Aggregation** | Sum                                                                                                 |

***

## Example

Your app campaign drove **2,847 installs** in March across platforms:

| Platform          | App Installs | Share |
| ----------------- | ------------ | ----- |
| Meta Ads          | 1,423        | 50%   |
| Google Ads        | 998          | 35%   |
| TikTok Ads        | 426          | 15%   |
| **Blended Total** | **2,847**    | 100%  |

With a total ad spend of **\$14,235**, your blended cost per install is **\$5.00**.

***

## How It Works

App installs are counted when a user downloads your mobile app after clicking or viewing an ad. Each platform reports installs based on their attribution window—typically 7 days for click-through and 1 day for view-through. Blended App Installs aggregates these counts to show total acquisition volume across your entire paid media mix.

***

## When to Use

| Scenario                            | Action                                                     |
| ----------------------------------- | ---------------------------------------------------------- |
| Measuring app acquisition campaigns | Track total installs across all platforms                  |
| Comparing platform efficiency       | Pair with cost per app install to find lowest cost channel |
| Forecasting growth                  | Use install trends to project user acquisition             |
| Budget allocation                   | Shift spend toward platforms driving more installs         |

***

## Related Metrics

| Metric                                                                                                                        | Relationship                          |
| ----------------------------------------------------------------------------------------------------------------------------- | ------------------------------------- |
| [Blended Cost per App Install](/reference/metrics/advertising/blended/blended-conversions/blended-cost-per-app-install)       | Cost efficiency for each app download |
| [Blended Completed Registrations](/reference/metrics/advertising/blended/blended-conversions/blended-completed-registrations) | In-app signups after install          |
| [Blended Leads](/reference/metrics/advertising/blended/blended-conversions/blended-leads)                                     | Lead generation conversions           |

[See all Blended Conversions metrics →](/reference/metrics/advertising/blended/blended-conversions)