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

# Demo Applications

This article provides a centralized jumping-off point for testing the Nayax EMV Core demo applications. Nayax provides a demo app to help you validate hardware communication and transaction flows from day one of your integration, ensuring your environment is correctly configured before you begin custom development.

### Why Start with Demo Apps?

* **Immediate Validation:** Confirm that your card reader and host system are communicating correctly without writing new code.
* **Reference Code:** Use the demo source code as a blueprint for implementing your own payment logic.
* **Gateway Testing:** Verify connectivity to the Nayax gateway and process test transactions in a controlled environment.

To access the repository, documentation, and setup instructions for your specific platform, select one of the following links:

<CardGroup cols={2}>
  <Card icon="mobile-screen-button" title="Android App" href="/docs/integrate-pos-device/emv-core/demo-applications/android-demo-application">
    Test the EMV Core integration on Android with a fully functional demo application and source code.
  </Card>

  <Card icon="terminal" title="Linux App" href="/docs/integrate-pos-device/emv-core/demo-applications/linux-demo-application">
    Test the EMV Core integration on Linux with a fully functional demo application and source code.
  </Card>
</CardGroup>