This is a paid asset, but now you can download Deferred Deep Linking for Android – Play Install Referrer Free.
Detail this asset from Unity Store: Original Link
Deferred Deep Linking v1.0.9
Deferred Deep Linking for Android is a direct implementation of Google Play Install Referrer API, it enables your unity applications or games to return the install referrer information in order to track installs, give users rewards, etc.
The plugin doesn’t require any configuration from your part, and the integration is simple and quick. Featurewise it also has a built-in cache for the referrer information (that you can turn off if needed) and direct integration with Universal Deep Linking plugin.
Finally, it contains a built-in test tool, so that you can test the plugin integration directly from the Unity Editor.
Features:
– Plug and play
– Built-in editor test tool
– Simple API
– Automatic caching
– Universal Deep Linking Integration
– Unity 5.5 and above support
Check our other plugins!
– Universal File Association: Enables you to declare your game/app as the default application to process files (e.g .pdf, .wav, .mp4).
– Universal Deep Linking: Open your app/game using custom URI deep links or web links
– Share Target for Android: Receive data from other apps with built-in share functionality!