> For the complete documentation index, see [llms.txt](https://docs.adpage.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.adpage.io/app-tracking.md).

# App tracking

Send events from an iOS or Android app through the server container to GA4, Meta Ads, TikTok Ads and Google Ads.

App traffic reaches the server container over a different route than web traffic, and it arrives without cookies, without a page URL, and with device information the ad platforms insist on. That is why an app setup is not a matter of pointing existing tags at a second source: app traffic arrives on its own client, and every platform needs its own tag on that client.

{% hint style="warning" %}
**The rule that prevents most app-tracking issues:** every tag and trigger in a container that handles app traffic filters on `Client Name`. A trigger that only matches an event name fires for web and app alike, which sends app events to a platform as web events, with an empty page URL and no identifiers.
{% endhint %}

## How to read this section

Read the four shared pages first. They apply to every platform, and the platform pages assume you know them.

1. **How app tracking works** — the route from the app to the platforms, and which part belongs to whom.
2. **Preparation and roles** — what must exist before you start, and what you agree with the app developer.
3. **Server container basics** — the GA4 App client, naming, and the trigger rule.
4. **Event data reference** — which fields the Firebase client makes available in the server container.
5. **Identifiers and consent in apps** — the single biggest factor in whether a platform can attribute an app conversion.

Then the platform you need: GA4, Meta Ads, TikTok Ads or Google Ads. Each platform page has the same seven sections, so you can compare them.

Finish with **Testing and verification** and, when something is rejected, **Platform error reference**.

## Scope

This section covers native app events collected with the Firebase SDK and forwarded by a Google Tag Manager server container. It does not cover webviews that show a website inside the app: that traffic runs over the web data stream and is documented with the web setup.


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