# WebApp Integration

If your app uses a WebView to render your own website, you may want to consider WebApp Integration.

WebApp Integration is recommended when business logic resides within the app or when you use push messaging.

With WebApp Integration, Hackle features called from the web will operate through the App SDK.

WebApp Integration provides the following advantages:

* You can inject the app's user information into the website to manage app and web users in a consistent way.
* You can use all of Hackle's features without distinguishing between web and app.

{% hint style="danger" %}
**If WebApp Integration is not configured, the web and app will have different identifiers and will not be recognized as the same user.**

* If you use the web SDK and app SDK separately without WebApp Integration, you need to implement identifier linking yourself.
* The web SDK and app SDK use separate device IDs, which results in two device IDs being generated for a single app.
  {% endhint %}


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