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

# Register your Android app

> Add your Android app to RevenueCat, connect its Google service-account key, and get its public SDK key for Rey.

Register the Android version of your app in the RevenueCat project you created.

<Steps>
  <Step title="Open Apps in RevenueCat">
    In your RevenueCat project, open **Apps** and choose **Add app**.
  </Step>

  <Step title="Choose Android">
    Select **Android** as the platform.
  </Step>

  <Step title="Enter the package name">
    Enter the exact Android package name (application ID) used in Google Play Console.
  </Step>

  <Step title="Connect your Google service-account key">
    In the Android app settings in RevenueCat, add the Google service-account JSON key for the Google Play account that owns your app. RevenueCat uses this credential to work with your Google Play products and subscriptions.

    If you do not have a key yet, create a Google Cloud service account, enable the Google Play Android Developer API, grant the account access in Google Play Console, and download its JSON key. See [Google Service Account Key](/publishing/app-stores/google-service-account) for the complete setup.
  </Step>

  <Step title="Save the app">
    Finish adding the app. RevenueCat creates a Google public SDK key for it, which you will copy when connecting RevenueCat to Rey.
  </Step>
</Steps>

<Warning>
  The Google service-account JSON key is sensitive. Keep it private and only provide it to trusted services such as RevenueCat.
</Warning>

<Tip>
  Configure Google Play products with the same product IDs that you later add to RevenueCat.
</Tip>