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

# Introduction

> See which ad brought each install, trial and purchase of your iOS app, and send them back to Meta and TikTok.

TrueOrigin attributes installs that start on the web: a Meta, TikTok or Google ad, an
influencer's bio link, a web funnel. The user taps your tracking link, installs from the
App Store and opens the app. TrueOrigin tells your app, your RevenueCat data and the ad
network which campaign that install came from.

## How it fits together

<Steps>
  <Step title="Tracking link">
    Every ad points to a link like `appdownload.link/yourapp/summer`. A tap opens a short
    click page and goes on to the App Store.
  </Step>

  <Step title="SDK">
    On the first open after install, the TrueOrigin SDK reports the install. A few seconds
    later your app gets the attribution: matched to a campaign, or not.
  </Step>

  <Step title="Revenue">
    With RevenueCat connected, trials, conversions and purchases are counted per campaign.
  </Step>

  <Step title="Back to the ad network">
    Postbacks send matched installs and purchases to your Meta dataset or TikTok pixel, so
    the network can optimise on them. Imported ad spend adds CPI and ROAS per campaign.
  </Step>
</Steps>

No Meta or TikTok SDK goes into your app, and the TrueOrigin SDK does not read the IDFA.

## Start here

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    From sign-up to your first matched install.
  </Card>

  <Card title="iOS SDK" icon="swift" href="/sdk/ios">
    Swift Package for native apps.
  </Card>

  <Card title="React Native" icon="react" href="/sdk/react-native">
    Expo module for React Native and Expo apps.
  </Card>

  <Card title="Tracking links" icon="link" href="/tracking-links">
    Links and URL parameters for Meta, TikTok, Google and Snapchat.
  </Card>
</CardGroup>

Android is not supported yet. Questions: [hello@trueorigin.dev](mailto:hello@trueorigin.dev),
or [book a call](https://cal.com/timok/trueorigin-onboarding).